How are agent backups affected during these events?

[backupquestions]

I'm backing up a SQL failover cluster with Veeam v10 agents. Working well so far.

Periodically, we do after hours work such as patching and rebooting these servers.

Let's say that the job is running, and then someone working reboots one of both servers during the middle of that. How will Veeam agent/b&r handle this? (we are using b&r to deploy and manage the job)

If you review the article https://helpcenter.veeam.com/docs/backu ... ml?ver=100 I found this spot here

IMPORTANT!

In case a backup task within a Veeam Agent backup job that processes a cluster completes unsuccessfully, Veeam Agent for Microsoft Windows will create full backup of all shared disks of the cluster.

So is that going to cause it to fail the job and then take a completely full backup of all disks on each cluster member just due to a reboot during middle? Or is Veeam smart enough to recognize a network/reboot and delay tasks and then attempt to resume resnap vss etc. ?

If it causes issues then I'd have to find a way to always come in and disable the job before maintenance work which is not ideal as different teams do the work and do the backups, so it would get missed from time to time.

[Egor Yakovlev]

Hi Alabaster,

Veeam Backup Job is unaware of your maintenance actions and will start according to schedule no matter what. There is a configurable automatic Retry option on Schedule Tab and we can try to process failed nodes X times with Y minutes between attempts (say, 3 times with 10 mins interval).

If some nodes will fail to get processed due to maintenance at any of those attempts(original job start + retries), than yes, next run will do a full read on cluster disks(backup file will be of .vib incremental type, however it will contain full data backup in it).

So answering your question, it will be best to align between departments and never trigger maintenance when backup is supposed to run.
/Thanks!