Restore options available Proxmox Backup

[Dragao]

Hi all,

I was looking to see if Proxmox backup has some options I am using in my current backup software as wer are planning to change over to Proxmox.

Does Proxmox Backup have an option to do an Instant Recovery? Like just start the VM from backup and do a migration to the production storage.

Does Proxmox Backup have an option like CDP (Continues Data Protection). Where I have a VM being instant replicated to another host and in case of failure the replica is started. (with option like failover and fallback)

Does Proxmox Backup have an option to make replica's of a VM to another host (in a cluster)?


Furthermore I have read that with file level restore the files are first downloaded to the client and then manually uploaded to the hosts where they need to be. Did i misread this? Isn't it possible to do a direct restore?

Many thanks for any insights

 

[Dragao]

So I found in the documentation the option for a live-restore. This seems to be the trick for an instant recovery but I am concearned about some parts.
- "once the OS and necessary services have been started, the VM is operational"
not quite clear to me. How long does this take?

- During live-restore, the VM will operate with limited disk read speeds, as data has to be loaded from the backup server (once loaded, it is immediately available on the destination storage however, so accessing data twice only incurs the penalty the first time). Write speeds are largely unaffected.
Does this mean some data (not restored yet) is unavailable? Will that throw me some errors? (i our case we are using this for a mail server which is highly used. )

- If the live-restore fails for any reason, the VM will be left in an undefined state - that is, not all data might have been copied from the backup, and it is most likely not possible to keep any data that was written during the failed restore operation.
Does this mean if the the restore fails new data is lost?

 

[fabian]

So I found in the documentation the option for a live-restore. This seems to be the trick for an instant recovery but I am concearned about some parts.
- "once the OS and necessary services have been started, the VM is operational"
not quite clear to me. How long does this take?

that depends on how much data your VM needs to boot, and how fast it can be accessed from the backup server.

- During live-restore, the VM will operate with limited disk read speeds, as data has to be loaded from the backup server (once loaded, it is immediately available on the destination storage however, so accessing data twice only incurs the penalty the first time). Write speeds are largely unaffected.
Does this mean some data (not restored yet) is unavailable? Will that throw me some errors? (i our case we are using this for a mail server which is highly used. )

no, it means that if your VM tries to access parts of the disks that haven't yet been restored, that access will be slower since it has to fetch the data from the backup server first, as opposed to fetching it from the regular storage. once it has fetched it, subsequent access to the same part of the disk will be fast.

- If the live-restore fails for any reason, the VM will be left in an undefined state - that is, not all data might have been copied from the backup, and it is most likely not possible to keep any data that was written during the failed restore operation.
Does this mean if the the restore fails new data is lost?

yes.