Granular control over VM parallel processing

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Granular control over VM parallel processing

Veeam Logoby pizzim13 » Thu Apr 06, 2017 2:40 pm

I see that there is one check box to enable parallelization of VMs and their disks for both backups and restore jobs. Is there anyway to disable the parallel processing of disks while keeping the parallel processing of VMs. I find that processing VMs with multiple virtual disks that are on the same datastore can really beat up the underlying physical disks.
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Re: Granular control over VM parallel processing

Veeam Logoby v.Eremin » Thu Apr 06, 2017 5:17 pm

Is there anyway to disable the parallel processing of disks while keeping the parallel processing of VMs.

No, in concepts of VB&R single task is equal to single virtual disk. Thus, parallel processing is defined by number of virtual disks (not VMs) that can be processed simultaneously.

I find that processing VMs with multiple virtual disks that are on the same datastore can really beat up the underlying physical disks.

But how this would be different from the situation when disks belonging to different VMs that reside on the same datastore will be processed at the same time?
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Re: Granular control over VM parallel processing

Veeam Logoby tsightler » Thu Apr 06, 2017 5:36 pm

If you enable storage latency control (assuming you have at least enterprise license), then Veeam will monitor latency on the datastore during backup and not start additional tasks if the datastore is being hammered, even on the same VM. It can even throttle the backup if datastore latency goes over the secondary threshold.
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Re: Granular control over VM parallel processing

Veeam Logoby mma » Fri Apr 07, 2017 6:32 am

There is even a veeam controlled limit of backup related snapshots (in other words backup tasks) per datastore.

Default is max. 4 snapshots per datastore. You can change this wit the key
HKEY_LOCAL_MACHINE\SOFTWARE\Veeam\Veeam Backup and Replication\MaxSnapshotsPerDatastore (REG_DWORD)

Regards
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