Changing the backup default disk

[pilgrimage]

ZFS storage can take snapshots only on disks with vms. I want to at least position a different disk with backup. Can I choose a different disk for backup?

 

[shrdlicka]

Hi,
For the scheduled backup you can select the storage location when you select a scheduled job and select another "Storage" location:


If you are in the backup tab of a VM node you can select a different location on the top:

 

[pilgrimage]

Default local disk is coming out, other than that, I can't choose a disk. Why can't I choose?

 

[Dunuin]

You first need to create a new storage with content type "vzdump" on the disk where you don't store your VMs. Then that new storage should be offered as an option as the backup target. You could also have look as PBS. Its waaaay faster and space efficient because of deduplication.

Lets say you got a 100GB VM that changes 10Gb per day and you want to have 10 weekly snapshots/backups:

Vzdump will need 10x 100GB = 1TB
PBS will need 1x 100GB + 9x 10GB = 190GB
Snapshots will need additional 10x 70GB = 700GB (or 800GB if you also take the initial 100Gb Disk into account)

So there is is huge space saving when for example switching from weekly vzdump backup + daily ZFS snapshots to just daily+weekly PBS backups.

 

[pilgrimage]

thankyou for support my friend.