Independant Disks

[willymaykett]

Quick question...

If the option for Independant disks is selected, and made persistent, does thsi now mean I cannot take snapshots of the disk?

Someone has changed the deselected options to delected, so it is now independant and persistent, and I do not know why they would do that? One claim was "performance"?? But there was no prevoious snapshots on the datastore for the VM??

thanks

[BenConrad]

Yes.

One advantage to using independent persistent disks is that snapshots are not applied to that disk. For example, if I'm running a vRanger backup on a server with a lot of SQL server volumes I can set those volumes to independent and I don't have to worry about delta data on the SQL server volumes filling up my VMFS filesystem.

A disadvantage is that sVmotion will not work with that disk. You can toggle the setting with powercli:

Get-VM | % { Get-HardDisk -VM $_ | Where {$_.Persistence -eq "IndependentPersistent"} | `

% {Set-HardDisk -HardDisk $_ -Persistence "Persistent" -Confirm:$false} }

Ben

[willymaykett]

Thanks to both.

This has confirmed what I thought, I am very happy

I have given you both helpful points