I personally think of a small DIY rack stuffed with commodity HDDs off Ebay with an LVM spanned across a bunch of RAID1s. I don’t want any complex architectural solutions since my homelab’s scale always equals 1. To my current understanding this has little to no obvious drawbacks. What do you think?
Backups… with LVM, if you’re trying to do a full system backup (ie with clonezilla, etc) then you have to backup the whole thing - you can’t backup just 1 drive.
I have a media server with 2x 2TB HDDs and 1x SSD in a LVM, split into Music, Video, TV… and the OS … and I can backup the individual files of course, but I can’t backup just the OS drive.
btrfs didn’t exist when I created it, but I use it on my NAS and it’s great.
I’ll be rebuilding my media server one day and change LVM to btrfs.