RAID
====

previously 2 600GB SAS disks were in RAID1 in the same volumegroup.

I have no spare disk, nor do I want to spend money on old tech.

Reconfigure : each disk is within own volume group, no more RAID, more (free) space.
Tool would not let me otherwise.

No more raid : 
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machine on one disk are backupped to other disk, and vice versa
one disk remains VG (volume group) within proxmox : used for LXC en VM images, backup
other disk contains ext4 filesystem and is a directory