Exchange 2010 DAG backup ?

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Re: Exchange 2010 DAG backup ?

Veeam Logoby Andreas Neufert » Tue Nov 21, 2017 8:07 pm

@Tore, the event is a typical error when a snapshot commit lead into a cluster failover and the database log can not be truncated. As the Truncation is replicated through the cluster, it could happen that one of the other dag database backups where successfull and truncation is replicated. You need to look why the Snapshot truncation lead into clutser failovers. Did you had set the correct cluster props?

Please look up the error code in my blog entry. You will find a lot of tips how to address this and why this happens.
http://andyandthevms.com/exchange-dag-v ... plication/
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[MERGED] Exchange 2016 DAG Backup

Veeam Logoby LMS » Thu Dec 21, 2017 6:02 am

Hi

We have Windows Servers 2016 HV hosts in cluster, configured 2 X Exchange 2016 servers in single DAG on 2 HV hosts (these VMs are not part of Cluster). There are 20 DBs with exchange and configured 10 DBs active on first node and rest 10 DBs active on second node. Also there are 2 DBs on each host which are local to each Exchange servers (these 2 DBs - total 4 on both the servers are configured to host a few users for testing purpose).

We are looking for best practice to take backup of DAG members as well the standalone DBs configured on each Exchange 2016 VM

Thanks in advance
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Re: Exchange 2010 DAG backup ?

Veeam Logoby foggy » Fri Dec 22, 2017 12:09 pm

Please review the link given above and this document for the Exchange DAG backup best practices.
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[MERGED] Exchange 2016 DAG Backups

Veeam Logoby DReevell » Tue Jan 02, 2018 10:37 am

Quick question, I think I already know the answer so I'm looking for some confirmation.

We're using Veeam B&R 9.5 to backup our Exchange 2016 environment however, there is a capacity issue that means we cannot backup ALL the exchange servers. Does Veeam support / allow administrators to backup a mixture of active and passive DAG dbase copies, i.e. some of the servers being backed up will only hold passive copies of the DAG dbases whereas some, will hold active and passive copies. Due to the way the DAG dbases are distributed it would be that some dbases would only have passive copies backed up whereas others would have both active and passive backed up.

My understanding is that Veeam would be ok and we should be able to restore items from within the database and, the database itself, even if we only have passive copies backed up. Is this correct? What (if any) 'gotchas' are there for using this method?

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Re: Exchange 2010 DAG backup ?

Veeam Logoby Shestakov » Tue Jan 02, 2018 10:48 am

Hello and welcome to the community!
Veeam Backup & Replication supports any configuration of DAGs, in particular, with all databases active on one node, or with active databases on every node. Transaction logs will be truncated on all DAG members, no matter whether VBR backs up an active or passive database.
Thanks!
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Re: Exchange 2010 DAG backup ?

Veeam Logoby Andreas Neufert » Tue Jan 02, 2018 11:04 am

... please let me add ... if you backup only some DAG members with Veeam Guest processing enabled, Transaction log truncation gets replicated by Exchange to the other servers. See above links for tons of additional details.
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Re: Exchange 2010 DAG backup ?

Veeam Logoby hwelvaar » Thu Feb 08, 2018 2:48 pm

No definitive answer yet ?
Has anything changed with U3 for B&R 9.5 ?

I have two Exchange 2016 servers, with 2 DAG databases. Each server has one active copy, and one passive copy of a DB. Remark: these are physical servers, so no underlying VMware or Hyper-V. And I want to start using Veeam to backup these systems.

So has the jury decided yet?: should I create one Veeam job with both servers, or different jobs with just one server each ?
And is Veeam in fact aware that it is backing up (or restoring) a DAG ?

Thanks guys for any feedback...
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Re: Exchange 2010 DAG backup ?

Veeam Logoby Andreas Neufert » Fri Feb 09, 2018 11:15 am

For several reasons it is a good idea to backup DAG servers sequentially instead of parallel. In a B&R VMware/Hyper-V Job this is not really possible to achive. So 2 Jobs.

In case of physical Exchange, you can use the Veeam Agent for Windows.

If you enable (Agents/Hyper-V/VMware Backup) Veeam Guest processing, we do Application Aware backup, which includes DAG detection and prepare all needed steps for restore of the VM (see my blog post for mentioned above for the Windows Event Log details) and Veeam Explorer Restore (Passive Databases will be added to explorer as well).
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[MERGED] First Backup of an exchange 2010: tips&tricks

Veeam Logoby tinto1970 » Thu Jul 05, 2018 9:55 am

hi folks,

Onece again i have an anxious backup job to start. I must start backing up an Exchange server 2010 with about 1400 mailboxes (4 TB data).
It lives in an NFS datastore on a Netapp.

Veeam (9.5u3) has the integration with Netapp storages (else i would not even try...). I've tested if it correctly works by putting a dummy vm in the same datastore and try backing it up.
These are the statistics
Processed: 70 GB, Read 70GB, Transferred: 2 GB (in the graphic i see a peak in reading at 900 MB/s)
Processing Rate: 557MB/s
Load: Source 99% Proxy 40% Net 10% target 0%

the target is a general purpose server with internal dissks (as @Gostev likes 8) )

My concern is that the vmware snaphosts, even if they will live only for minutes, could slow down the server and force it to unmount the databases.
Given the scenario, how good are the chance of the Exchange to "survive" the backup process?

A friend if mines suggests to put a ingestion limit in the repository, to avoid overload on the production storage. Any suggestions and help is really appreciated.

Thanks in advance for reading
Alessandro Tinivelli aka Tinto
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Re: Exchange 2010 DAG backup ?

Veeam Logoby foggy » Fri Jul 06, 2018 3:32 pm

Hi Alessandro, I've merged your post into existing topic discussing tips and tricks of Exchange Server backup, please review. Here's also the KB article regarding similar matter.
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Re: Exchange 2010 DAG backup ?

Veeam Logoby Andreas Neufert » Mon Jul 09, 2018 11:34 am

Hi Alessandro,

thanks for the feedback and questions.
To limit the speed on the target side will not help to prevent peak backup load on the source. This is by design of Veeam and Caching.

So overall if you "only" have the Exchange and Exchange backup workload on the Storage, please use the Veeam Latency control setting to allow Veeam to reduce the backup steam when the storage latency grow.

Overall, usually the backup load itself should not be an issue foe Exchange as you have designed your Exchange server for load peaks. The only "problematic" workload is the snapshot commit. By following the Veeam KB and my blog post tricks and tips, you usually avoid those issues completely.
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