Is using 6x1tb used desktop drives for raidz2 a bad idea and just a headache?
>>107254355i'm using 24 256g chink SSD's in LVM right now on my server. comfy af
>>107254355No, if you have backups like a sane person would.
>>107254355Depends on how used the drives are. So it mostly comes down to luck.
>>107254355Probably better suited for the home server general thread.I wouldn't call it a headache, but I would question if this is even worthwhile to bother with. Old spinners may not be as reliable as you'd hope, and that's a lot of power being burned for a measly 4TB of usable capacity. If you were 2 or 3 way mirroring them as "I have this trash on hand and want something to host moderate performance VMs on", I could see it. Alternatively, using them as metadata special devices in a pool with larger RAIDZ vdevs. I've been running metadata specials on mirrored rust for a few years now and haven't had any issues with it. It's not SSD speeds obviously, but liberally using smallblocks to shove any small shit onto the mirrors helps with fragmentation on the RAIDZ vdevs and keeps them doing mostly linear I/O, which they're good at.Do keep in mind the sector sizes if you have any intention of using these drives and potentially swapping them with replacements down the raod. 1TB drives might be actual 512B sector sizes. Almost all modern drives are 4K (or larger for SSDs). Even if the drive is in 512 emulation mode, the physical sector size is 4k. If you do make a pool with these, I'd suggest manually setting ashift to 12 so that ZFS treats them as 4k sector sizes. You pay a tiny efficiency penalty for that because blocks that could compress down may not save as much/any space (A block that compresses to 10kB takes up 3x4k sectors as opposed to 20x512B sectors), but it'll save headaches down the road if/when something goes bad.
>>107254355You get so little storage it's not worth it
