I’m planning on replacing my NAS (which is used purely for backup storage) with a Linux box, and was thinking of using ZFS because the backup software can do a few extra tricks with it. It would be 2 drives mirrored (mainly because the machine I’m thinking of using is a home made rack case built inside an old switch case, and there’s only room for 2 drives )
But what I’m curious about is how well ZFS handles a power failure.
I’ve seen warnings in the past about needing a UPS because ZFS can be corrupted by power loss. But my Minecraft server has lost power many times in the last year or so it’s been running, and it’s on ZFS.
I’m OK with data loss of unwritten data since it’s only backups (and the software will restart the current backup if it loses power). What I’m mainly concerned about is the entire pool being corrupted or destroyed… Is that a common issue for power fail, or just another ZFS boogieman type warning?