Architectural Recommendations Please - Planning Advice

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Architectural Recommendations Please - Planning Advice

Veeam Logoby aweinstein » Mon May 16, 2016 1:39 pm

Relatively new Veeam user here, looking for some planning advice. We have been using B&R 8 to backup a few Hyper-V VM's in our colo, and are planning a move to backup our whole infrastructure using B&R 9. Here are some details about our environment:

1) Hyper-V 2012 R2 using failover clustering, we have 2 nodes now, adding one more in the coming months
2) 10G LAN, and 10G ISCSI SAN, powered by Datacore. Separate ports and switches for each network
3) Exclusively Windows VM's now, there might be some Linux VM's in the future, but not a key part of what we do
4) We will probably replicate via VPN to another location initially, with Azure replication in the roadmap
5) Most VM's between 100-300GB, only a few are large (>1TB data)
6) Almost 40 VM's currently, growing by 1-2 VM's at a time as we add customers
7) Total data storage around 10-12 TB or so

My initial plan was to purchase a Dell R730XD, using at least 64GB RAM, 2xXeon CPU's, 2x10G NIC, RAID1 on 10K SAS or SSD for OS and applications, and RAID5 using 7200 RPM NLSAS for the repository. What are the recommendations for maintaining high performance for this system? Should all of the roles be installed on this dedicated appliance? One big repository, our should we split into more than one RAID group?

TIA-
-Ari
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby PTide » Mon May 16, 2016 2:28 pm

Hi and welcome to the community!

What are the recommendations for maintaining high performance for this system? Should all of the roles be installed on this dedicated appliance? One big repository, our should we split into more than one RAID group?
It's hard to say anything without any info about your RPO and RTO objectives. Another significant thing that should be taken into account when planning a backup infrastructure architecture is backup method that you'd like to use. So please provide some extra information and kindly use our search engine.

Some useful links:

- RAID considerations
- Best Practices for Hyper-V High Availability
- System requirements

Thank you.
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby foggy » Mon May 16, 2016 2:31 pm

We also have a best practices document (it is for VMware, but many things apply).
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby aweinstein » Mon May 16, 2016 2:58 pm

We have redundant hypervisors and a redundant SAN, so most of our restores are basic file/folder recoveries. Of course, we are using Veeam so that we have the ability to recover the entire environment if necessary. We would like to be able to run multiple incrementals daily, possibly using the synthetic full option overnight. Also, the ability to "roll back" a VM after a failed upgrade or software install would come second after basic data restores. We would probably use forward incremental method, depending upon the system.

Would performance be helped by having a backup proxy in a VM on each hypervisor?
Are there differences between VMware and Hyper-V backup that I should be aware of?

Thanks,
-Ari
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby PTide » Mon May 16, 2016 3:34 pm

Would performance be helped by having a backup proxy in a VM on each hypervisor?s
That is a subject to test. Anyway it's not a recommended approachfor large environments. It'd better to either use on-host proxy or to deploy a separate physical machine. Please take a look at this article.

Are there differences between VMware and Hyper-V backup that I should be aware of?
Hyper-V takes a snapshot in a different way than VMware. You should keep in mind that VMs that have shared vhdx can be backed up in a crash-consistent state only. Also CBT data is stored on each node of the cluster, and if it is turned off, then VM backup job will do a full disk image scan.

Thank you.
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby aweinstein » Wed May 18, 2016 1:23 pm

If we utilize the synthetic full feature, does ALL processing take place on the backup server (i.e. the "appliance" we are spec'ing out)?

Thanks,
-Ari
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby PTide » Wed May 18, 2016 1:46 pm

Synthetic full backup load is splitted between backup proxy and backup repository. During synthetic full backup, Veeam does not retrieve VM data from the source datastore but “synthesizes” a full backup from data you already have in the backup repository thus the most part of load goes to repository, backup proxy is used to create a new incremental backup. Please see this article for details.

Thanks
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby aweinstein » Wed May 18, 2016 2:59 pm

Does transforming incremental into reverse incremental also run without needing access to the source datastore? It sounds like using forward incremental + synthetic full + reverse incremental is the best methodology for us.

-Ari
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Re: Architectural Recommendations Please - Planning Advice

Veeam Logoby foggy » Wed May 18, 2016 3:09 pm

Transform is also performed locally on repository server. Though keep in mind it is pretty I/O intensive.
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