I am currently thinking about moving away from my LVM setup to a ZFS setup with RAIDZ.
My current setup consists of 5 x 4TB disks in a LVM and a 60GB SSD for the system.
At the moment there is about 6TB used on the LVM.
Is there a way, without completely backing up the 6TB, to migrate the LVM to a RAIDZ setup with 4 + 1 drives?
Edit: I did some research and the main problem I encountered was, that when creating a RAIDZ you need to have all disks available. The only possibility I saw was to create a RAIDZ with 3 HDD's, then moving all data from the LVM into this raid and then extending the ZFS pool with 2 single vdevs. Big disadvantage is that the 2 last HDD's are not "protected" by the raid system.