[pve-devel] [PATCH 1/4] RFC: Efficient VM backup for qemu

[Dietmar Maurer]

> Yes, this is space vs speed.
> I have in mind some high database load, like 5000iops or more, so it need a
> fast backup storage in this case.
> I the vm does random io, does the backup storage write blocks sequentially ?
>  (if yes, maybe it can be fast with a slow random io backup storage but with
> high sequential throughput)

Btw, compression can also help to reduce sequential traffic to the backup disk.