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GabesVirtualWorld
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Replicate AND backup of the same VM

Post by GabesVirtualWorld »

Hi
Preparing a big move from a customer into our datacenter using VEEAM Replication. This is all done by VEEAM B&R Server 1. Now after migration we're going to backup those VMs with VEEAM B&R Server 2. Would there be issues if Server 2 would start backups of the replica's about a week before the failover will be done by Server 1? I would like to do this to stretch the load of all those initial full backups over a few days instead of the migration weekend.

Will the final failover trigger a full resync? Because that would make making the earlier backups useless :-)

Regards
Gabrie
HannesK
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Re: Replicate AND backup of the same VM

Post by HannesK »

Hello,
it works, but it's slow because there is no change block tracking (CBT) in that scenario.

Final failover is fine for the Server 2 backups. Once all the snapshots are deleted, CBT still start working.

Best regards,
Hannes
GabesVirtualWorld
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Re: Replicate AND backup of the same VM

Post by GabesVirtualWorld »

Hi,
Are you saying that AS LONG as a replication is active on B&R Server 1 from source VM to target VM, it is preventing B&R Server 2, to create a CBT for the target VM while making a backup?
And with active replication, I mean that we don't sync and backup in the same window. Either the sync is running or the backup is running.
Regards
Gabrie
HannesK
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Re: Replicate AND backup of the same VM

Post by HannesK »

whether one or two backup servers are used is irrelevant for CBT. as long as you do backup from a replica, there is no CBT. all snapshots need to be deleted before CBT starts working.

Backup works - it's just slow (well, and licenses are required 2x)
GabesVirtualWorld
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Re: Replicate AND backup of the same VM

Post by GabesVirtualWorld »

Ah the snapshot is preventing the CBT to be created. Got it. Thanks
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