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we are currently implementing Veeam Backup & Replication 5.0.2 in our vSphere 5 environment (waiting for the hotfix before moving to production). While testing with a particular virtual machine, I never got backup speeds above 25MB/s with using both Direct SAN access and Network Backup. Other virtual machines were backed up just fine (45MB/s network using GbE and >100MB/s using SAN).
After some testing it turned out that the affected VM had a snapshot in its configuration. After I removed the snapshot, backup speed improved to normal values like for other VMs - so the reason of the slow backup speed definitely had sometheing to do with the snapshot. I however cannot reproduce this behavior by creating a new snapshot - backup speed still remains fine.
The snapshot I deleted was prolly months old and pretty filled up (though I forgot to check this). Has anyone seen such a behavior before and is there an explanation for this? Or might this be somehow related to the current vSphere5/Veeam compatibility issues?
- Veeam Software
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- Full Name: Alexander Fogelson