Super fast hotadd backup but super slow migration

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Super fast hotadd backup but super slow migration

Veeam Logoby hasayeretFMG » Wed Jun 21, 2017 2:27 pm

Good morning (It is morning, isn't it? I think it is... )

Strange situation: I am able to backup from a host at 130MB+ for a second using a virtual machine as a proxy (hotadd). Couldn't ask for more.
However, when I instant recovery one of the VMs I just backed up and migrating back to the host it backed up from using the same proxy it used to, it does the migrate at a 5MB(1) per second!
It uses also hotadd, just like the backup. I tried switching to NBD but I get the same results. I have "Target" as my bottleneck.
Not really sure why there's such a huge different speed-wise but I would love it if anyone can shed some light on this one...

Thanks a million!
hasayeretFMG
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Re: Super fast hotadd backup but super slow migration

Veeam Logoby DGrinev » Fri Jun 23, 2017 2:32 pm

Hi Ben,

Please can you share a screenshot of the sessions logs with the hotadd and NBD mode? Thanks!
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Re: Super fast hotadd backup but super slow migration

Veeam Logoby hasayeretFMG » Mon Jun 26, 2017 12:48 pm

For some reason under the history I do not see the migration to production history... just the instant VM recovery which is the first step and that only takes me a minute...
Thoughts?
hasayeretFMG
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Re: Super fast hotadd backup but super slow migration

Veeam Logoby Vitaliy S. » Mon Jun 26, 2017 2:37 pm

It's hard to say anything without seeing session logs or screenshots. Instant VM recovery by itself is just publishing the VM from the backup file. If your backup storage doesn't have enough IOPs power, then migration will also be slow. What's your backup storage?
Vitaliy S.
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Re: Super fast hotadd backup but super slow migration

Veeam Logoby hasayeretFMG » Wed Jun 28, 2017 12:42 pm 1 person likes this post

Vitaly: looks like we found the solution: our cache battery on our SAN was messed up. A restart to it solved it...
hasayeretFMG
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Re: Super fast hotadd backup but super slow migration

Veeam Logoby Vitaliy S. » Wed Jun 28, 2017 12:48 pm

That's interesting, good to hear that you've resolved it. Do you have an external tool to monitor these type of issues?
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