Proxmox and support for Backup Deduplication

[johjoh]

Does Proxmox support Backup Deduplication?
My idea was two backup:
- one local on a storage with classic full VM backup;
- the second, remote, with deduplication and copy of the difference only.

 

[1nerdyguy]

No, it doesn't. The backups themselves are written in a way that dedupe has very little impact at all.

 

[fireon]

Yes dedup is working fine here. Three things are important:

• Backupstorage is ZFS
• Fullbackups saved without compression from pve backuptask (only vma)
• Backupstorage must have a lot of memory and I/O

More efficient is to use pve-zsync instead.

 

[LnxBil]

We should write a wiki entry about this .... so many people are asking the same without searching the forums.

 

[fireon]

Yes, it would make sense.

 

[johjoh]

Thank you all, I will try.
Anyone work with Synology NAS for backup storage?

 

[LnxBil]

Anyone work with Synology NAS for backup storage?

Synology have more than one model, so a general answer is not possible. As long as it supports NFS, it'll work.

 

[johjoh]

I have created an iSCSI Target on Synology.
If in Proxmox I attach it as iSCSI it work correctly.
How can I attach iSCSI target, format in ZFS and make it a VZdump backup store from Proxmox?
Deduplication work also on NFS?

 

[fireon]

How can I attach iSCSI target, format in ZFS and make it a VZdump backup store from Proxmox?

This can't work so. You must have ZFS on your Synology or what ever. But for vzdump it is better to use NFS or Samba.

Deduplication work also on NFS?

Yes. But you need a lot of Memory and many i/o and CPU. Think 96GB Memory and more.