Comprehensive data protection for all workloads
Locked
Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

READ THIS FIRST : [FAQ] FREQUENTLY ASKED QUESTIONS (updated to 9.5 U4)

Post by Gostev » Aug 17, 2013 9:50 am

Navigation
Although this FAQ might look outdated because of the post creation dates: it is based on version 9.5 update 4

General FAQ
This topic (scroll down) covers general information about the product, and all core features which are not hypervisor-specific.

VMware vSphere FAQ
The following FAQ covers VMware vSphere specific questions:
VMware : [FAQ] FREQUENTLY ASKED QUESTIONS

Tape FAQ
The following FAQ covers tape specific questions.
Tape : [FAQ] FREQUENTLY ASKED QUESTIONS

Microsoft Hyper-V FAQ
The following FAQ covers Microsoft Hyper-V specific questions.
Hyper-V : [FAQ] FREQUENTLY ASKED QUESTIONS (pending content collection)


Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Licensing

Post by Gostev » Aug 17, 2013 9:51 am

Q: How the product is licensed?
A: There are two options
  • Per Instance - for VMs (VMware, Hyper-V, Nutanix) and agents (Windows, Linux)
  • Per CPU Socket for VMware and Hyper-V
Only count the "source" hypervisor host (where protected virtual machines reside). Destination hosts (or VMs) for replication and migration jobs do not need to be licensed. Hosts running virtual machines which are not being processed by Veeam do not need to be licensed, even if they are a part of the same cluster.

Q: What are the feature differences between the Standard, Enterprise and Enterprise Plus editions?
A: You can find the differences on https://www.veeam.com/backup-version-st ... rison.html

Q: Does CPU core count matter?
A: No, the price is the same no matter of amount of CPU cores.

Q: Are any of the product components licensed separately? Namely Enterprise Manager, backup servers, backup proxy servers, backup repositories, WAN accelerators, tape libraries.
A: No, they are not licensed separately. You can deploy as many of those components as it makes sense for your environment.

Q: Can I install multiple backup servers across multiple sites using the same license file?
A: Customers can use a single License Key to deploy multiple backup infrastructures with no design restrictions, provided that they use Veeam Backup Enterprise Manager for centralized license management across these infrastructures.

Q: Can I mix and match different product editions in the same environment.
A: Customers can use multiple License Keys with different license terms, but only for completely separate backup infrastructures (which are defined as not sharing backups, servers or storage between each other and are protecting different source infrastructures). Please refer to the licensing EULA for more details

Q: At what specific moment do the source host sockets get counted towards the licensed sockets pool?
A: Upon first backup, replication or copy of a VM that is running on the given host.

Q: I have removed some hosts from my environment, can I get their sockets back into the license pool?
A: Yes. Open the license management dialog in the main product UI, select the host, and click Revoke.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Upgrade: Licensing

Post by Gostev » Aug 17, 2013 9:53 am

Q: Do I need a new license file to install newer versions?
A: In general: yes (there were some exceptions in the past where it was not required).

Q: Is there a free upgrade from previous versions?
A: With Veeam, all upgrades are "free" for customers on maintenance. All perpetual license purchases include 1 year of maintenance. If you did not extend your maintenance after the 1st year, you need to address this with your Veeam sales representative first by purchasing maintenance, including the "blank" period coverage. For instance based licensing (subscription) you are eligible to upgrade as long as you have a valid subscription.

Q: I am current customer on maintenance, how do I get the license file for the latest version?
A: Please use License Management Portal in https://my.veeam.com to get your new license file or open a licensing support case for assistance. If you choose to create a ticket, expect delayed response in the first few days after the product has been released.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Upgrade: Technical

Post by Gostev » Aug 17, 2013 9:54 am

Q: Do I need to perform clean install, or can I upgrade my existing B&R install?
A: No, we support in-place upgrade.

Q: How do I upgrade?
A: The upgrade process is very simple and straightforward. Make sure no jobs or restore processes are active, and run the setup program on your backup server. After the setup finishes, launch the B&R and follow the Upgrade wizard to automatically upgrade all the remaining components. For more details and step-by-step process, please refer to the Upgrade section of the Release Notes document. Upgrade Enterprise Manager first if you use it.

Q: Will upgrade preserve my jobs and other settings?
A: Yes, all your jobs and settings will be preserved. This also means that potential new features will not be enabled by default, and must be enabled manually if desired. This is to ensure the product behavior remains the same after upgrade.

Q: What B&R version can I upgrade to the latest version?
A: Please refer to the “Upgrading Veeam Backup & Replication” section in the release notes.

Q: Can current and previous versions be installed on the same server?
A: No. You can, however, run different versions in parallel on different servers while processing the same VMs without any issues (as long as jobs do not overlap). This is the approach most of our customers choose for POC testing of new versions before upgrading their production deployment.

Q: Can Enterprise Manager collect data from older Veeam Backup & Replication?
A: In general, “yes”. It depends on the versions. Please find that information in the release notes (in the Upgrading Veeam Backup & Replication section)

Q: Can I restore backup made with previous product versions?
A: Yes. Current version can restore backups made with any version of Veeam Backup & Replication starting from version 1.0.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

System Requirements

Post by Gostev » Aug 17, 2013 10:02 am

Q: What are the system requirements and supported configurations for the product components, and for protected VMs?
A: Refer to the System Requirements section of the Release Notes document available in the download area, https://helpcenter.veeam.com and on the product page under Resources tab. Refer to platform-specific FAQ topics for additional platform-specific information.

Q: Is Veeam Backup & Replication supported running in a VM?
A: Yes.

Q: Is Veeam Backup & Replication available as a Linux-based virtual appliance?
A: No.Veeam Backup & Replication must be installed on Microsoft Windows.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Job Types

Post by Gostev » Nov 07, 2013 1:11 pm

Q: What are Backup jobs designed for?
A: Backup jobs produce highly compressed and deduplicated backup files with production VMs data, which allows you to save significant amount of space required to host the backups. Full VM restore from backup normally takes significant time due to the need to extract and copy full VM image from backup to the production storage, but can also be done instantly for a limited number of VMs (see Instant VM Recovery).

Q: What are Backup Copy jobs designed for?
A: Backup Copy jobs efficiently create copies of your backups both on-site (usually for archival purposes) and off-site (to meet the off-site backup storage requirement). Maintaining multiple copies of your backups, with some of them being off-site is dictated by industry best practice known as 3-2-1 backup rule: at least 3 copies of production data (1 production and 2 backups), with backups stored on 2 different media types, and 1 of them stored off-site.

Q: What are SureBackup jobs designed for?
A:: SureBackup jobs perform actual recovery verification by powering on one or more VMs in the isolated environment, and verifying recovery by checking if VM was started, OS was booted, VM responds to ping, and VM applications are running fine. SureBackup job is also the key component of U-AIR and On-Demand sandbox functionality.

Q: What are Replication jobs designed for?
A: Replication jobs produce exact replicas of production VMs on standby hosts. These replicas can be powered on immediately when production VM goes down, without any dependencies on Veeam Backup and Replication server, and at full I/O performance. However, replicas require standby host, and more disk space than backups due to being stored in uncompressed, native format. Thus, replica are typically used for tier 1 VMs with low recovery time objectives.

Q: What are VM Copy jobs designed for?
A: VM Copy jobs produce exact copies of selected VMs on the selected storage, and can be used for scenarios such as datacenter migrations, creating test labs, and ad-hoc backups. VM Copy jobs support processing of running VMs. Unlike backup job however, VM Copy does not support "incremental" runs. VM copy jobs are only supported for VMware VMs.

Q: What are File Copy jobs designed for?
A: File Copy jobs copy regular files between any servers managed by Veeam (Windows or Linux servers, or hypervisor hosts), and can be used for various administrative tasks. File Copy jobs do not support processing of virtual disk files belonging to running VMs.

Q: What are Backup to Tape jobs designed for?
A: Backup to Tape copy Veeam backup files to tape with full tracking of the content of copied backup files in the tape catalog. This allows for streamlined restores, with restore process being able to pick the required tapes automatically.

Q: What are File to Tape jobs designed for?
A: File to Tape jobs copy regular files from any servers managed by Veeam (Windows or Linux servers, or hypervisor hosts) to tape. Copied files are tracked in the tape catalog, however Veeam backup files are treated as regular files.

Q: What are Quick Migration jobs designed for?
A: Migration jobs can move the running VMs to the selected hosts and storage with minimum possible downtime. Depending on your migration scenario and VMware licensing level, the migration job will automatically leverage one of the following: VMware VMotion, VMware Storage VMotion, Veeam Quick Migration with SmartSwitch, or Veeam Quick Migration with cold switch. This allows you to quickly evacuate VMs from hosts requiring urgent maintenance without affecting bandwidth or performance, or perform inter- and intra- datacenter migrations. Migration jobs are only supported for VMware VMs.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Backup

Post by Gostev » Nov 07, 2013 1:25 pm

Backup Architecture

Q: What is the data flow in case of backup?
A: Disk > Backup proxy > Network > Backup repository > Disk

Backup Proxies

Q: What is the backup proxy server?
A: Backup proxy fetches the VM data (configuration files and virtual disks) from the production storage, processes the data to reduce it size by applying deduplication and compression, and sends it off to the backup repository (in case of backup) or another backup proxy server (in case of replication). Backup proxy is also used to write the VM data (configuration files and virtual disks) back to the production storage, which is used for VM restores, and to create and update replica VMs for replication.

Q: Why is it best to install the proxy server on a physical machine?
A: Because on-the-fly processing (deduplication and compression) of heavy data streams (up to multiple gigabytes per second) requires significant CPU, Memory and I/O resources, physical proxy server suits best for 24/7 virtual environments with high consolidation ratio. Otherwise, you may find backup process affecting your production.

Q: What OS can I install the proxy server on?
A: Microsoft Windows 7 SP1 / Server 2008 SP2 in 64bit editon or later.

Q: Do I have to setup a proxy server to start using a product?
A: No, as default proxy server is deployed by the setup automatically. However, we recommend that you add additional ones for redundancy and load-balancing. For recommendations on where it is best to deploy additional proxies, please refer to the hypervisor-specific FAQ.

Q: Can the proxy server backup itself?
A: Yes, the proxy server can backup itself and any other Veeam Backup & Replication component.


Backup Repositories

Q: What is the backup repository?
A: Backup repository is the place where your backups are stored. Each backup repository has local agent that enables for efficient local processing of incremental data in cases when backup proxy and backup repository communicate over LAN or WAN.

Q: Should I use “per-VM backup files”?
A: Per-VM backup files have many advantages over the default “per-job backup files”. The advantages are:
  • Easier tape restore
  • No 16TB files on wrong formatted NTFS volumes
  • More performance through parallel processing
  • Easier job management (put more VMs in one job)
  • Resource usage with SOBR
  • Optional Windows Server 2016 Dedupe if files < 1TB
  • Easy deletion of VMs from backups
  • Per VM accounting
The only disadvantage is that per-VM backup chains consume a little more space because cross-VM deduplication is not possible.

Q: What do you support as a backup repository?
A: The following repositories are supported:
  • Any storage directly attached to a Microsoft Windows server. The storage can be local disks, directly attached disk-based storage (such as USB hard drive), or a iSCSI/FC SAN LUN in case the server is connected into the SAN fabric.
  • Any storage directly attached to, or mounted on a Linux server (x86 and x64 of all major distributions are supported, must have bash shell, SSH and Perl installed). The storage can be local disks, directly attached disk-based storage (such as USB hard drive), NFS share, or iSCSI/FC SAN LUN in case the server is connected into the SAN fabric.
  • SMB (CIFS) share. Password authentication is supported. Data can be written to SMB share directly from the backup proxy server, or through a gateway server (useful in cases when SMB share is located in the remote site).
  • Disk based deduplication appliances with integrations to Veeam. Currently Dell / EMC DataDomain, ExaGrid, HPE StoreOnce, QuantumDXI (and OEM).
Q: Can I use a virtual machine as my backup repository?
A: Yes, however be sure to think you recover plan in case of disaster carefully. While actual VM does not need to be running in order for you to be able to restore (as you can always import your backups directly from storage), remember that disaster may affect your ability to retrieve the backup files if you store them in the VM disks located on your production storage. Additional recommendations and considerations are provided in the hypervisor-specific FAQ.

Q: What RAID level do you recommend for the underlying backup storage?
A: We recommend at RAID6 (or any other similar dual-parity implementation) for optimal redundancy. RAID10 offers higher performance especially for I/O intensive backup operations such as synthetic fulls.

Tape & Offsite

Q: Does Veeam support writing its backups to tape?
A: Yes, Veeam offers native tape support for LTO-3 and newer. See Tape Support FAQ for more information.

Q: What is the best way to copy my backups offsite?
A: Backup Copy job to an offsite backup repository. Considering using built-in WAN acceleration for slow links.

Backup Modes

Q: What backup mode should I choose among available?
A: This depends on your requirements. As features for VBR evolved over the years, today we recommend the following backup modes:
  • Forever forward incremental
  • Forward incremental with synthetic or active fulls
  • Reverse incremental
Forward incremental with transforms is not recommended.

Forward incremental with synthetic or active fulls have the advantage, that the backup chain does not change during backups. This allows to run virtual labs or tape jobs while a new backup is created.

Forever Forward incremental has advantages over Reverse incremental as the merge happens after the backup finished. That means VM snapshots are consolidated faster. If you want to write a full backup to tape, a “Virtual synthetic backup” needs to be created for Forever Forward incremental while a Reverse incremental full backup can be written directly to tape.

Reverse incremental mode does not allow to write incremental backups to tape.


Q: What are the benefits of incremental forever backup methods?
A: Less stress on the production environment, faster full backup performance, a few times less backup storage space due to no need to keep multiple full backups (for reverse incremental, forever forward incremental and forward with transforms).

Q: I am using deduplicating storage device. Is synthetic full backup good for me?
A: Depending on how your storage implements deduplication (inline, post-process or integrated with DDboost or Catalyst), you may get a better performance by using active (real) full backup instead of synthetic.

Q: We have a policy in place that requires me to do real full backups. Am I forced to use synthetic fulls with Veeam?
A: No, you can configure the job to perform active (real) full backups instead. Also, you can schedule active full backup, for example, once a month (or once a quarter), while doing synthetic full backup for the rest of the time. Veeam provides great flexibility around scheduling active full backups.

Q: How exactly does reversed incremental backup mode work?
A: Please see www.veeam.com/kb1933

Q: How exactly do the forward incremental modes work?
A: Please see www.veeam.com/kb1932

Q: How can the advanced ReFS integration help?
A: In general it's about performance and space efficiency for backup modes without active full backup. This blog post explains the benefits.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Backup Copy

Post by Gostev » Nov 07, 2013 1:46 pm

Q: What is the data flow in case of backup copy?
A: Data flow depends on the transport mode selected in the job.
Direct mode: Disk > Source backup repository > Network > Target backup repository > Disk
WAN accelerated: Disk > Source backup repository > Source WAN accelerator > Network > Target WAN accelerator > Target backup repository > Disk

Q: Does Backup Copy job literally copy backup files?
A: No. Backup Copy job creates new backup files containing VMs it is selected to process.

Q: What is the difference between selecting VMs from infrastructure, from backup and by adding primary backup jobs?
A: There is no difference, this is just a matter of convenience. In all cases, Backup Copy job will obtain VM data from backup files.

Q: How can I create a Backup Copy Job from a Backup Copy Job? (source repository -> BCJ -> destination 1 repository -> BCJ -> destination 2 repository)
A: Select “from infrastructure” and specify the source repository when adding resources when creating the BCJ.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Replication

Post by Gostev » Nov 07, 2013 1:47 pm

Q: What is the data flow in case of replication?
A: Disk > Source proxy > Network > Target proxy > Disk

Q: Can I use the same source and target proxy for replication?
A: Yes, but only when replicating locally (on-site replication). In this case, B&R scheduler will attempt to use the same backup proxy whenever possible.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

SureBackup

Post by Gostev » Nov 11, 2013 3:05 pm

Q: Can you please go over of the whole concept and what it is all about?
A: See the following high-level video (for desciption of concept and architecture), and more technical demo (contains UI of older version, but the way how it works is the same today).

Q: What is SureBackup job?
A: SureBackup jobs perform actual recovery verification by powering on one or more VMs from backup or replica in the isolated environment, and verifying recovery by checking if VM was started, OS was booted, VM responds to ping, and VM applications are running fine. Additionally, to be able to detect the storage corruption issue (aka bit rot), SureBackup job can optionally verify the complete VM image by reading all virtual disk blocks and comparing the contents against CRC included in the block.

Q: What exactly is verified by the SureBackup job? VM availability, OS boot up or also applications?
A: All of this. There are 4 steps or level of recovery verification:
1. Check for successful VM startup (API call results). For example, if virtual disk is missing from backup file, or if disk descriptor file is corrupted, VM will not start and vCenter will tell SureBackup the issue.
2. Check for successful OS boot up by checking VM heartbeat. If OS does not boot, then guest tools will never start and heartbeat will never appear.
3. Check for network connectivity by pinging VM. If VM never appears on the network, this also indicates in some recovery issue.
4. Check VM applications by running test scripts against them. If application does not respond to test script with expected results, this indicates recovery issue.

Q: Are all of the above tests mandatory?
A: No. You can define which tests you want to use granularly for each VM, container, or linked backup job.

Q: Which VMs will be verified by SureBackup job?
A: All VMs from the selected application group (these run for the duration of the job providing required infrastructure services), and all VMs from linked backup jobs (these are simply started, verified and stopped one by one).

Q: I can see that it is possible setup SureBackup job without specifying application group to use. How so?
A: If you do not care to verify application recoverability, and just want to make sure VM can boot up, then you do not need to worry about some applications possibly not starting because of missing dependencies, and thus you do not need an application group to start and run those dependencies first. Just stuff your SureBackup job with linked backup jobs, and make sure application test scripts are disabled to avoid getting verification error reports.

Q: If I have not virtualized my Domain Controllers, how do you bring instances of those inside the virtual fenced lab?
A: You have to have at least one virtualized domain controller.

Q: I received report that verification had failed for one of the VMs. How can I quickly see what is going on?
Q: Open the corresponding SureBackup job session, locate the VM in question, right-click it and choose to restart it. Click the hyperlink under VM name to open its console (or use vSphere client), and troubleshoot the recovery issue manually.

Q: Verification procedure for some application we have is a manual process that cannot be scripted. What is our best option?
A: Create dedicated application groups for these applications. Create SureBackup job with this application group, select the Keep VM running checkbox, and schedule the job with the required period (say, once a week after full backup). VMs will sit there and wait for staff responsible for manual recovery verification to come in the morning and perform the required tests by connecting to the VM manually.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Deduplication

Post by Gostev » Nov 11, 2013 3:40 pm

Q: What kind of deduplication do you perform?
A: We perform agentless, block-level, inline (on-the-fly) deduplication. Deduplication happens both at source (before data is sent to backup storage, which significantly improves incremental backup performance), as well as target (to achieve additional reduction for jobs with multiple VMs).

Q: What are the typical data reduction ratios?
A: Compression and deduplication ratios up to 10x and more of the original size can be achieved, but this depends on too many factors, such as amount of VMs in the job, similarity of those VMs, content of virtual disks, etc. Over the years 2x became a rule of thumb over a "normal" environment.

Q: 10x is nice from software, but other software and hardware dedupe vendors claim to have 100x and more deduplication ratio?
A: Ask them to provide the formula they are using to calculate dedupe ratio. With Veeam, 10x is pure deduplication ratio within a single full backup file (bytes in divided by bytes out). Other vendors often inflate ratios to achieve impressive numbers for marketing purposes. This is typically done by assuming each backup is full. If you apply this approach to Veeam, then with most typical 30 days retention policy with daily backups, you will get up to 300x "marketing" dedupe ratio. This is because Veeam allows you to keep only one full backup on disk at any time (no matter of how long your retention policy is).

Q: To what level the deduplication is done?
A: We do block level dedupe with constant block size (configurable 4096 KB, 1024 KB, 512 KB or 256 KB blocks), on the job level (not between jobs). If the repository is configured with “per-VM backup files” the deduplication is on per VM level.

Q: I've been told that Veeam deduplication is inefficient because it uses large block sizes.
A: Veeam deduplication is designed to work alongside with compression, so you should be looking at the overall data reduction ratio instead. Large block size allows for both higher processing performance, and much better compression ratio for individual blocks. This allows Veeam to achieve the same data reduction factors with much smaller processing overhead. As you can see from this research by EMC, when deduplication is coupled with compression, overall data reduction ration remains about the same as the block size increases. This is because compression algorithms benefit from having more data in the block to work with.

Q: How can I achieve the best deduplication ratio?
A: Group similar VMs (such as VMs with the same operating system, or VMs made from the same template) in the same job. Have fewer jobs with more VMs in each, rather more jobs with fewer VMs in each. Do not configure “per-VM backup files” on the repository.

Q: My VMs are not made from the same template. Will dedupe work between them?
A: Yes. Because deduplication is done on block level, it does not matter if VMs were made from the same template, or provisioned manually. Any similar blocks between VMs will be deduped, even if these VMs have different operating systems.

Q: Does deduplication work for replication, or for backup only?
A: No, because replicas are created in native format (uncompressed), deduplication is not applicable to them.

Q: Since Veeam has its own deduplication, does it make any sense to write Veeam backup files to storage device with hardware deduplication?
A: Yes, this way you will get global deduplication (between backup files produced by different backup jobs). Generally speaking, deduplicating storage devices are best choice for long-term archival of backup files produced by Veeam. Most deduplicating storage device are not good as primary backup target, because unlike raw disks, these devices are not designed to provide good IOPS, and may become primary bottleneck for your backup performance, thus affecting your backup window. Likewise, poor random read I/O performance certain deduplicating storage devices are exhibiting may affect restore performance.

Q: Have you done integration testing with other vendor's deduplicating technology such as EMC DataDomain, HP StoreOnce, ExaGrid, Quantum, etc?
A: Yes, we have partnerships with most deduplicating storage vendors. Moreover, there are noticeable performance improvements over many versions.

Q: Should I disable built-in deduplication it I am backing up to a deduplicating appliance?
A: If you use a “Veeam integrated” deduplication device (EMC Data Domain with DDboost, ExaGrid, HPE StoreOnce with Catalyst, Quantum DXi) the settings will be adjusted automatically according the best practices. For other deduplication devices or protocols please refer to the job and repository settings in the best practice guide

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Built-in WAN Acceleration

Post by Gostev » Nov 11, 2013 3:41 pm

Q: What is the expected bandwidth saving?
A: Data reduction ratios up to 50x and more of the original size can be achieved, but this depends on too many factors, such as similarity of the content. Approximate savings ratio can be assumed as of 10x

Q: Does it make sense to use the WAN accelerator with more than 100 Mbit/s bandwidth available?
A: In most cases not. Depending on the environment you will see that you do not save transfer time with 50-100Mbit/s or more bandwidth. But you can still achieve bandwidth savings by using WAN accelerator.

Q: Which cache size should be configured at the target WAN accelerator?
A: It is recommended to configure the cache size at 10 GB for each operating system (Windows 2012, 2012R2, 2016…) processed by the WAN accelerator. All Linux distributions count as one operating system

Q: Which cache size should be configured at the source WAN accelerator?
A: The global cache on the source WAN accelerator is not used, but it must exist as a number (5GB minimum). Keep in mind that Source WAN Accelerator requires ~20 GB per 1 TB of source data to store digests of data blocks of source VM disks. Disk space consumption is dynamic and changes as unique VMs are added to (or removed from) to jobs with WAN Acceleration enabled

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Application-Aware Image Processing

Post by Gostev » Nov 11, 2013 3:41 pm

Q: What exactly do you mean by application-aware image processing?
A: Application-aware image processing is unique Veeam technology that allows creating image-level backups in application-aware manner. It is a multi-step process that consists of detecting applications running inside of the processed VM; using Microsoft VSS to perform application-level quiescence to ensure that each application state is transactionally consistent; applying application-specific settings to prepare each application to perform VSS-aware restore on the next VM startup; and finally performing transaction logs pruning for certain applications if backup was successful. The whole process is fully automated.

Q: Why application aware image processing functionality in Veeam is important? How is it better than VMware Tools VSS integration?
A: Microsoft VSS was not designed with image-level backup and restores in mind, but rather for file-level backup and restore process. For some applications, on top of basic VSS quiescence, additional steps need to be taken when backing up and restoring the VM image as a whole.

Q: Do I need to deploy persistent agent in every VM that I am backing up in order to be able to use application-aware image processing?
A: No, Veeam does not use persistent agents inside VMs. Instead, Veeam automatically deploys small runtime coordination process to each VM when backup starts, and removes it immediately after backup finishes. This frees you up from agents micromanagement (deployment, configuration, updates, monitoring, troubleshooting). Besides, actual VM runs without any 3rd party agents present most of the time.

Q: Does Veeam install its own VSS provider on each guest?
A: No, we leverage default VSS provider from Microsoft that is already available on each Windows guest.

Q: What is Microsoft VSS and how it can provide transaction consistency with image-level backups?
A: Please read the following beginners guide to Microsoft VSS: What is Windows VSS & why you should care

Q: What applications do you support for transaction-consistent backups?
A: Any VSS-aware application running on Windows XP/2003 or later. All modern server applications from Microsoft are VSS-aware, plus many 3rd party vendors ship their server application with VSS writers as well.

Q: How do I know if my application is VSS-aware?
A: It should implement VSS writer and have it installed and registered in Microsoft VSS framework. Open command prompt on backed up VM, and run vssadmin list writers for complete list of VSS-aware applications on specific system.

Q: Do you know if Oracle has VSS writer?
A: Yes, Oracle 11g has a component named "Oracle VSS Writer" that installs when selecting Windows OCI Components on the Oracle 11g database install wizard. It does support Oracle 10g starting from patchset 10.2.0.3. Also later versions (12c, 18c) have a VSS writer.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

File Level Recovery

Post by Gostev » Nov 11, 2013 3:44 pm

Windows

Q: Does file level recovery (FLR) require that backup file content is extracted and staged on disk or in RAM before recovery can take place?
A: No, file-level recovery happens directly from backup file, withour prior extraction.

Q: Do you have to backup VMs with guest file system indexing enabled to be able to do file level recovery?
A: No. Unlike with other solutions, with Veeam indexing is completely optional and is not a requirement for file level recovery. However, indexing enables you to additionally perform 1-Click File Restore through web UI (see below).

Q: How does native Windows file level recovery work?
A: Native Windows file level recovery mounts the content of backup file directly to backup server as folders. You can even point any applications to files located in these folders, and use them normally (backup file remains read-only no matter what you do).

Q: Can you restore files with correct permissions?
A: Yes, this option is now available.

Q: What file systems are supported for instant file-level recovery?
A: FAT, NTFS and ReFS.

Q: Are GPT disks supported?
A: Yes, starting version 6.1

Q: Are Windows dynamic disks supported?
A: Yes, starting version 6.5

Other OS

Q: How does multi-OS file level recovery work?
A: Because Windows cannot read other file systems natively, we invented a patent-pending approach that uses special FLR helper appliance that runs stripped down Linux (takes 10 sec to boot) yet smart enough to be able to read the data from as many as 17 file systems. Virtual disk files of VM you are restoring from are mounted to FLR helper appliance directly from backup file (without prior extraction).

Q: Can you restore files with correct permissions?
A: Yes, this option is now available in the multi-OS file-level restore wizard when restoring directly to a Linux host.

Q: What operating systems are supported for instant file-level recovery?
A: 17 most commonly used file systems from Windows, Linux, Solaris, BSD, Unix, Novell and Mac operating systems.

Q: Do you support instant file level recovery from NSS volumes on Novell / Micro Focus OES?
A: Yes. See the full list of supported file systems in the release notes or user guide

1-Click File Restore (Enterprise Manager web UI)

Q: I have 1-Click File Restore buttons (Restore and Download) disabled? Guest system indexing is enabled on all jobs.
A: This is premium functionality that is only available in the Enterprise Edition of our product. If you have Standard Edition, use instant file level restore wizards in the B&R console instead.

Q: How does 1-Click File Restore work?
A: Enterprise Manager web UI user picks one or more guest files to restore by browsing or searching guest file system index of the backed up VMs (indexing explained below). Enterprise Manager then creates a task on Backup server, and the Backup server restores the file using native file level restore capabilities (see above).

Q: Do I need to install any agents on the guest to be able to restore files to the original location?
A: No, 1-Click File restore is agentless.

Q: Do you have to backup VMs with guest file system indexing enabled in order to enable 1-Click File Restore?
A: Yes, 1-Click file restore requires that guest file system is indexed during the backup.

Q: Does the 1-Click File Restore process preserve the original file, or simply overwrite it?
A: Yes, the original file is preserved with the _original suffix.

Q: What if the original file is locked by some process, and cannot be renamed?
A: In this case, we restore the file with the _restored suffix, and log a warning no notify the restore operator.

Q: How do I make someone the File Restore Operator?
A: Using the Configuration page of the Enterprise Manager, grant user the corresponding role. The user will then be able to logon to the Enterprise Manager web UI. File Restore Operators can only see a subset of web UI (specifically, Files tab only).

Q: Does the File Restore Operator need to have permissions on restored file, guest, VM, or host to be able to perform the in-place restore?
A: No.

Q: Can I restrict File Restore Operators to be able to restore specific file types only? Disable ability to download the restore files? Restrict them to the certain virtual machines only?
A: Yes, these settings are available in the Enterprise Manager configuration.

Q: In case of in-place restore (back to original location), do you preserve files permissions and ownership?
A: Yes.

Q: What are the system requirements for 1-Click File Restore?
A: Same as for Windows file level restore (see above), since both are using the same engine.

Q: Is 1-Click File Restore supported for OS other than Windows?
A: Same as for Windows file level restore (see above), since both are using the same engine.

Guest File System Indexing and Search

Q: Do I need to deploy any agents inside of each VM to be able to index guest file system?
A: No agents are required. All you need to do is select the corresponding check box in the backup job wizard, and specify the administrator's credentials to your VMs.

Q: Will turning on indexing slow down my backups significantly?
A: Usually not. Instead of scanning through the whole file system (like some competitive solution do), we capture index data directly from NTFS MFT, as a part of guest OS freeze process. For a typical VM, the required data is captured and parsed nearly instantly, which is we are calling this Instant Indexing.

Q: Is the Instant Indexing feature only available with Veeam Enterprise Manager?
A: You do not need Enterprise Manager to create the local catalog, but you have to install Enterprise Manager server to be able to browse and search for guest files in VM backups, and maintain global catalog across multiple backup servers. Also, please see the Standard vs. Enterprise Edition comparison document on product page under Resources tab for more information about slight differences in Instant Indexing feature set depending on your Veeam Backup license level.

Q: I have more than one Backup server. Will the guest file search show results across all Backup servers?
A: Yes, as long as all your Backup servers are federated in the Enterprise Manager.

Q: Where does the index database reside?
A: Local catalog is stored directly on the Veeam Backup server, in the location specified during setup. Global catalog (across all backup servers) is located on the Enterprise Manager server. Additionally, index is also stored in the backup file itself (and so it is immediately available for all imported backups).

Q: What do I need to backup to protect index database?
A: You need to backup Enterprise Manager server, since this is what holds global catalog (across all backup servers). Backing up local catalog data on Veeam Backup servers is not required, since any new index data that appears there is automatically (and incrementally) replicated to the global catalog.

Q: It looks like guest file index is missing some files?
A: By default, we do not index Windows system and temp folders to reduce the index size.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Instant VM Recovery

Post by Gostev » Nov 11, 2013 4:03 pm

Q: What is Instant VM Recovery?
A: Instant VM Recovery allows you to instantly recover any VM into your production environment by running it directly from backup file. Best analogy is that this gives you "spare tyre" so that you can get to a service shop. You cannot go at full speed, but you are still going instead of being stuck in woods. To complete the restore, you can use native hypervisor capabilities to migrate the recovered VM to production storage without any impact on users (this is like changing spare tyre to a real one as you go). Alternatively, you can move VM to production storage during off-hours with short downtime using Veeam Quick Migration (this is like pulling over to a service shop to change tire). Note that Instant VM Recovery supports bulk operations (multiple VMs at once).

Q: As a percentage, what's the difference in performance when running a VM that has been replicated versus one that’s running from a backup file?
A: It depends on many factors (backup files location, storage speed of Veeam Backup server, number of concurrently running instantly recovered VMs). Generally, for all low I/O server (such as DC, DNS, DHCP, WWW, AV, PRINT) the performance difference will be hardly noticeable. Impact on high I/O servers will be much more noticeable, because vPower engine throughput is limited.

Q: Our hypervisor license does not include migration capabilities, or migration does not work. What are my options to complete the restore?
A: Simply perform failover during the next maintenance window. To do that, use Quick Migration functionality in Veeam. Unlike with hypevisor-based migration, this approaches require short downtime. However, this is still beneficial as this allows you to convert unplanned downtime (which is what cost businesses money) into planned downtime during your regular maintenance windows.

Q: Will Storage VMotion or Quick Migration carry over the actual, latest VM disks state (including delta from backup state)?
A: Yes, this happens automatically.

Q: What happens if Veeam Backup server fails when you have instantly recovered VMs running?
A: Just what happens when your production storage fails - nothing pretty. Keep in mind that no data is lost as long as the backup server comes up again later with no data corruption. Although the chance of consequent failures of 2 different storage devices is pretty unlikely to say the least. It is like getting a hole in your newly placed tire...

Q: What happens if there is no space left in the vPower NFS write cache location?
A: The VM will probably crash. Do not change anything (especially do not stop IVMR) and create a support call. Support might be able to help if you can free up space.

Q: With the instant VM recovery feature present, why would you replicate?
A: 2 big reasons: not to have dependencies on vPower engine to run the VM, plus full disk I/O performance in case of disaster (important for large-scale disasters).

Q: Will Instant VM Recovery work with RDM that have been backed up?
A: Yes. RDM in virtual mode is backed up as VMDK and are available directly in the backup file. RDM in physical mode is skipped during backup, however there is nothing preventing instantly recovered VMs from connecting and using it (if it is not impacted by the disaster, of course).

Manual Recovery Verification

Q: I have Veeam B&R Standard Edition. How can I do "manual" SureBackup recovery verification. What is the process?
A: To perform manual recovery verification, you should use Instant VM Recovery feature. For example, for simple VM boot up test, just go through the Instant VM Recovery wizard and power on VM, but do not select a checkbox to connect VM to a network.

Q: I performed boot up test as described above, and while VM booted fine, most applications could not start?
A: This is expected because there is no network connectivity, so application cannot establish connection to domain controller, DNS servers, and other services it is dependent on. If you want to test application recovery, create isolated network and edit instantly recovered VM network configuration before powering it on. Perform this for all required VMs which run dependent applications (such as DC and DNS), placing them all on the same isolated network, and start them in correct order (for example, DNS > DC > Application).

Q: This sounds very similar to what we are already doing during our monthly/quarterly/annual DR tests. What is the catch?
A: The catch is that with Veeam, you are able to run VMs directly from backup files, without spending many hours of extracting all those VMs from backup to production storage. Even finding free disk space alone (to extract all required backups) often becomes a challenge. So restore test that would previously take a whole weekend can now be completed in less than 30 mins.

Q: This manual process sounds too complex to perform for every backup, every VM, every time as your marketing materials state?
Q: That is right, which is why our Enterprise Edition provides fully automated recovery verification that performs all of the tasks described above automatically, including running required test scripts against each VM. It even creates and manages isolated test environment automatically for you. This allows you to perform DR test every single day, with review of email report showing recovery verification job results being the only manual activity in the whole process.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Virtual Lab

Post by Gostev » Nov 11, 2013 4:07 pm

Q: Do I need to create virtual lab for Instant VM Recovery?
A: No. Instant VM Recovery feature is available even in the Standard Edition, which does not provide ability to create virtual labs.

Q: What exactly this "virtual lab" is?
A: By virtual lab we mean automatically managed, fully isolated environment where VMs can be run directly from backup file to facilitate features such as universal application item recovery (U-AIR), SureBackup (recovery verification) and On-Demand Sandbox. Virtual lab uses isolated virtual networks that mirror production networks, and uses proxy appliance for routing between production and isolated networks, and between isolated networks. Each virtual lab places all temporarty VMs in the designated folder and resource pool. You can use resource pool to control resource usage of virtual lab VMs.

Q: How does the proxy appliance work?
A: The proxy appliance allows to route traffic between computers in the production network, and temporary VMs running from backup in the isolated network. Think about proxy appliance as your home router, which routes traffic between your home network and internet.

Q: Do you change temporary VMs IP addresses to prevent IP conflicts for VMs which are already running in production?
A: In fact, all temporary VMs in the isolated network have exact same IP addresses as in production network. IP address conflicts are simply not possible, as different VLANs are used for production and isolated networks.

Q: How is it possible to access temporary VMs in the isolated network from production network, if VMs in both networks have the same IP addresses?
A: Each temporary VM is assigned so called "masquerade address" from selected masquerade network (part of virtual lab settings). Routing table on Veeam Backup server is automatically updated, and proxy appliance IP address in the production network is assigned as gateway for masquerade network. Acting as gateway, the proxy appliance performs address translation and substitutes masquerade IP address with real IP address in the isolated network. Although this sounds pretty complex, all happens transparently for you as a user.

Q: What if i want all computers on the network to be able to access those temporary VMs running in the virtual lab?
A: You should assign the proxy appliance static IP address in the virtual lab settings, and update your production router settings to forward all request destined into masquerade network (as configured in virtual lab settings) to the proxy appliance IP address. Alternatively, if you only need to access select VMs in the isolated network, you can use virtual lab's Static Address Mapping feature and point specific IP addresses in the production network to selected IP addresses in the isolated network. Proxy appliance will grab specified production IP addresses for its production network interface, and will take care of routing automatically.

Q: Is it possible to enable internet access from within the virtual lab?
A: Yes, you will see the corresponding settings on the Proxy step of the Virtual Lab wizard.

Application Groups

Q: What is Application Group?
A: Application Group is our way to handling application dependencies for any VMs running in the isolated environment. Simplest example is Microsoft Exchange server - if you power it on in the isolated environment which does not have DNS server and Domain Controller present, mailbox store will not start.

Q: Can you give an example of what is typical Application Group looks like for small Windows shop.
A: Any application group should contain at least DNS server for name resolution, and directory server for authentication. In Windows world and smaller environments, both services are typically provided by Domain Controller, so application groups may look like these (put DNS before DC if DNS server is separate):
Exchange: DC > Exchange
FTP Server: DC > File Server > IIS
SharePoint: DC > SQL > SharePoint

Q: Can you give an example of what typical Application Group looks like for small Linux shop with no directory services used.
A: Any application group should contain at least DNS server for name resolution. Application groups may look like these:
CMS: DNS > MySQL > Apache w/CMS code
CRM: DNS > Oracle > CRM Server

Q: I have pretty static and small environment with just a few VMs. How should I configure application groups?
A: Simply put all of your VMs in a few application groups keeping in mind the required boot order. You can create one group per application, or you can have more than one application per group, or even all of them in a single group.

Q: I have a large and dynamic environment with many VMs created and deleted daily. Micro-managing application groups is hardly possible.
A: We have thought of that. In this case, you should setup your application groups to contain essential infrastructure services only (for example, DNS and DC is something almost every application in Windows shop depends on). Now, SureBackup jobs provide you with capability to "link" this application group and one or more of your backup jobs together. With such setup, SureBackup first starts the application group VMs and leaves them running for the duration of job, and then proceeds to powering on VMs from linked backup jobs one by one for verification. As a result, as you are adding or removing VMs from environment, they will be automatically added to backup jobs (granted you have backup job setup on container basis), which in turn will make them processed as a part of SureBackup job without requiring you to edit its settings.

On-Demand Sandbox

Q: How do I setup a sandbox?
A: Create new application group and stuff it with VMs you want to be available in sandbox. Create new SureBackup job, select the newly created application group, and select "Keep VMs running" checkbox. Now, simply run the SureBackup job. As soon all VM in the job start, your sandbox is ready! You can open VM console for all VMs running in the sandbox normally, and do whatever you need to do! Or, simply connect to applications running in sandbox with native management tools you are using to manage the same application in your production environment.

Q: When I start SureBackup job, it always runs using latest backups - but I need to go 1 week ago?
A: To start SureBackup to restore point other than latest backup, right-click the job, select "Start To" in the short-cut menu, and select the desired date and time to start the job to.

Q: I can ping and access sandbox VMs running in the isolated environment by masquearade IP address from backup server, but not from any other computer?
A: This is because routing table was updated automatically on Veeam Backup server as a part of SureBackup job. If you execute route print you will see one of routes pointing to proxy appliance IP address in production network. So, to make other computers able to access sandbox VMs, you should either update their local routing table (note that Universal AIR wizard does this automatically), or configure router in your environment accordingly to make this work for all computers at once (however, it might be easier to use Static Mapping feature of the virtual lab instead).

Application-Owner or Developer-Directed Recovery

Q: How do I enable developers or engineers to restore data from an application that cannot be restored with file-level restore or the Veeam Explorers?
A: Essentially, you need to create ever-running SureBackup job with application in question, and provide convenient DNS name to it.
1. Create new application group with VMs running required application and its dependencies.
2. Create new SureBackup job with "Keep application group running" option selected, and schedule it to run after each backup.
3. Open settings for Virtual Lab used by SureBackup job, and edit static IP mapping feature to map isolated IP address of required VM to some unused IP address in the production network.
4. Update production DNS and assign simple DNS name to the IP address chosen earlier, for example "exchange-yesterday".
With that in place, any user in the production environment will be able to access the server running from latest backup in the isolated environment by this DNS name. Any VMs published in such a way will be running until the next backup job is started. The next run of backup job will stop any linked SureBackup jobs, and perform backup. Then, SureBackup job will start using the newly created latest backup file according to its schedule, and again runs for the whole day until the next backup. Effectively, you will have a copy of application running from last night's backup always available to users behind easy to remember DNS name - enabling them to logon to familiar user interface and recover any data they need. This system will require no maintenance whatsoever.

Q: What are some use cases for this?
A: Just a few ideas, I am sure you will find many more uses - please let me know!
1. After unintended changes on production PostgreSQL you want to check out the differences between the latest backup and production.
2. Development shops. Publish yesterday's copy of MySQL database, and let your developers test new code, lookup previous state of any values, compare database schema, and so on. Every day, the server behind selected DNS name will run the latest copy of MySQL from last night's backup, making it extremely simple and convenient to access, with the system requiring zero maintenance. Any changes made to the database will be discarded once the SureBackup job running the VM is stopped.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Data Labs Self Service And U-AIR Wizard (Universal Application Item recovery)

Post by Gostev » Nov 11, 2013 4:13 pm

Q: How does it work from developer or application owner perspective?
A: User perspective:
1. Install AIR wizard on user workstation (located on VBR ISO).
2. Right-click the Virtual Lab Manager tray icon to create new virtual lab request.
3. Specify description, estimated time needed, required VM and restore point, and submit request.
4. Wait until the request is approved by backup administrator, and the lab is started.
5. Continue in the AIR wizard and do whatever you like (test update, do a restore that is not possible with Veeam Explorers or file restore etc.).
6. If you need more time, just extend virtual lab lease.
7. When done, dismiss the lab (if you forget, it will expire automatically).


Q: How it works from backup administrator perspective?
A: Administrator perspective:
1. Receive email notification about new lab request.
2. Open Enterprise Manager, make decision to approve or deny the lab request.
3. Go through request approval wizard. If necessary, adjust request settings (such as lab lease time).
4. Manage active labs if needed. For example, stop lab used by developers to let somebody else perform emergency restore using the same virtual lab.
5. No need to babysit lab, as they will automatically expire after requested time passes.


Q: How it works under the hood?
A: All operations described below are fully automated and "hidden" from users:
1. AIR wizard generates lab (Virtual Lab must exist already) request and passes it over to Virtual Lab Manager (VLM), which and sends it over to Enterprise Manager.
2. Request is approved by admin, who selects SureBackup job to use as a part of approval process.
3. Enterprise Manager will automatically locate Veeam Backup server for selected SureBackup and will have it run the SureBackup job for required VM only.
4. Once all dependent, and the selected VM are running and ready (ready means recovery verification was successful), Veeam Backup server notifies Enterprise Manager.
5. Enterprise Manager notifies requesting VLM install and provides network parameters for lab (proxy appliance IP address and masquerade IP address of requested VM).
6. VLM updates routing table on local machine and notifies user the everything is ready with popup notification.
7. User is now able to proceeds through AIR wizard to perform application item recovery.
8. Lab automatically expires automatically as requested time passes (unless user extends the lease, or per user request to dismiss the lab).

Q: How this "universal recovery" is supposed to work?
A: Once the lab is prepared, Universal AIR wizard will provide masquerade IP address of requested VM in the isolated environment, and update routing on current computer automatically to enable transparent access. You can then use native management tools to extract required items from the application and put them back to production server. For example, you can use free Oracle SQL Developer to perform item-level recovery from Oracle database, or Microsoft SQL Management Studio to perform item-level recovery from Microsoft SQL database, or MySQL Workbench to perform item-level recovery from MySQL database, etc. - any application!

Q: I had never dealt with databases before. Is there a demo that can help me better understand the concept, so I can explain this to my colleagues?
A: This video shows (beginning from 28:10min) an example where the presenter connects the SQL Management Studio to the production SQL database and in parallel to the Data Lab / Universal Restore SQL Database. (The video is quite old, but the concept is still the same today)

Q: Do I have to install the AIR wizard on Veeam Backup server?
A: No, the AIR wizard is usually only needed on the workstations of the people who do the requests. For example, you can install them on developers' workstations.

Gostev
SVP, Product Management
Posts: 24176
Liked: 3301 times
Joined: Jan 01, 2006 1:01 am
Location: Baar, Switzerland
Contact:

Advanced

Post by Gostev » Nov 11, 2013 4:14 pm

Bottleneck Analysis

Q: Job statistics tells me I have a bottleneck, and I cannot seem to get rid of this no matter what I do. What am I doing wrong?
A: You are doing nothing wrong. Even most powerful backup infrastructure will have a bottleneck - just like any bottle, no matter of size, has the bottleneck. We merely show you the "weakest" (thinnest) link of the chain - what to consider upgrading next to be able to improve processing performance. However, if you are happy with you jobs performance and backup window, you should not do anything about it (just consider this info as an FYI).

Q: What do the 4 load numbers I get in per-VM statistics mean?
A: These numbers show percent of time the given data processing stage was busy versus waiting for other stages to provide or accept the data. Do not expect the numbers across all processing stages to add up to 100%, as busy time of each processing stage is measured separately and independently.

Q: What are the data processing stages?
A: No matter what job you are running, and how you have the product deployed, there are 4 main data processing stages that data passes in the specific order (think data processing conveyor). These are Source > Proxy > Network > Target, and each processing stage has a load monitoring counter associated with it.

"Source" is the source (production) storage disk reader component. The percent busy number for this component indicates percent of time that the source disk reader spent reading the data from the storage. For example, 99% busy means that the disk reader spent all of the time reading the data, because the following stages are always ready to accept more data for processing. This means that source data retrieval speed is the bottleneck for the whole data processing conveyor. As opposed to that, 1% busy means that source disk reader only spent 1% of time actually reading the data (because required data blocks were retrieved very fast), and did nothing the rest of the time, just waiting for the following stages to be able to accept more data for processing (which means that the bottleneck is elsewhere in the data processing conveyor).

"Proxy" is the backup proxy server (source backup proxy in case of replication). Proxy performs on-the-fly deduplication and compression of data received from the source component, which can be quite resource intensive operation on hundreds MB/s data streams. The percent busy number for proxy component shows the proxy CPU load. For example, if proxy shows 99% busy, it means that the proxy CPU is overloaded, and is likely presenting a bottleneck on the whole data processing conveyor.

"Network" is the network queue writer component. This component gets processed data from the proxy component, and sends it over a network to the target component (e.g. the repository). The percent busy number for the network component shows percent of time that network writer component was busy writing the data into the network stack queue. For example, 99% busy means that the network writer component spends most of the time pushing pending data into the network, because there is always some previous data still waiting to be sent over to the target. This means that your network throughtput is insufficient, and is presenting a bottleneck on the whole data processing conveyor.

"Target" is the target (backup/replica storage) disk writer component. Percent busy number for the target component shows percent of time that the target disk writer component spent writing the data to the storage. For example, if target shows 99% busy, it means that the target disk writer component spent most of its time performing I/O to backup files. This means your target storage speed is presenting a bottleneck for the whole data processing conveyor. All the pending I/O operations cannot complete fast enough (the storage fabric could also be the limit), and due to that there is always some data waiting in the incoming queue of the network component that is waiting to be written to disk.

Q: Can I see load numbers in the real-time?
A: If you hover over the bottleneck value in the real-time statistics window, you will get a tooltip with the current values. However, because this data is real-time, it may be affected by intermittent issues, or temporary conditions (such as file system cache population in the beginning of the job). Averaged load data logged in the session log for each VM is more accurate and reliable.

HannesK
Veeam Software
Posts: 3226
Liked: 384 times
Joined: Sep 01, 2014 11:46 am
Location: Austria
Contact:

TAPE

Post by HannesK » Jan 11, 2019 10:10 am

Tape

Q: Which tape autoloaders / libraries does Veeam support?
A: Veeam supports LTO compatible devices (physical and virtual). You can find a list of libraries and autoloaders which were reported to work in the tape forum

Q: Is path failover supported?
A: Veeam Backup & Replication supports path failover for tape devices with multiple drives that manage multiple paths over multiple SANs.

Q: Which device driver should I use?
A: Veeam Backup & Replication supports custom vendors drivers as well as generic windows drivers. However, it is recommended to install vendors drivers in non-exclusive mode.

Q: Is WORM media supported
A: Yes, since version 9.5 update 4.

Q: Can Veeam share one library with 3rd party tape solutions?
A: If the library supports partitioning, yes. By partitioning the library Veeam can only see its part of the library and same for 3rd party tape solutions.

Q: Can I install another backup product that also writes to the same tape (library) on the Veeam server?
A: No, this is not possible.

Locked

Who is online

Users browsing this forum: Baidu [Spider], Majestic-12 [Bot] and 25 guests