CMDR_Horn

Dull IT moment

https://lemmy.world/post/36073012

Dull IT moment - Lemmy.World

I reviewed my NAS today and determined that I’m running on borrowed time. | name | power on hours | Reallocated_Sector_Ct (05) | |------|----------------|----------------------------| | sda | 56501 | 0 | | sdb | 43021 | 0 | | sdc | 56497 | 0 | | sdd | 56501 | 0 | | sde | 71716 | 120 | | sdf | 59382 | 0 | | sdg | 18730 | 0 | | sdh | 70350 | 0 | | sdi | 19449 | 0 | | sdj | 71712 | 8 | | sdk | 44838 | 56 | | sdl | 71715 | 16 |

Sep 17, 2025 at 8:31pmWeb
Show threadonslaught545Sep 17, 2025
Do you have it in a drive failure tolerant RAID configuration?
Show threadCMDR_HornSep 17, 2025
2x6 vdev raidz2. All of the ones with failures are in vdev2 so I just ordered 6x 22tb replacements to not only get rid of the bad drives, but also expand the pool
Show thread9tr6gyp3Sep 17, 2025
Wait, you can expand raidz pools?
Show threadCMDR_HornSep 17, 2025
Yes, but only if you replace all the drives in a vdev with larger capacity drives. After the resilvering the pool will grow to the new capacity
Show thread9tr6gyp3Sep 17, 2025
So if you slowly replace the drives with bigger capacities (say 1 replacement a month), you won’t actually gain the extra capacity until you’ve gone through and replaced all the drives (which if you did 1 a month, it would take 6 months)?
Show threadCMDR_HornSep 17, 2025

Correct. So long as the resilvering finishes you’re golden.

And you’re on a newer updated version of zfs

Show thread9tr6gyp3Sep 17, 2025

Cool, thanks for clearing that up. Im building a home server atm and working through which file system to go with. I have 4x enterprise SSDs that im going to start with, and some of it will be used for NAS storage, among other services.

I know zfs has a lot of fans, but im personally more experienced with btrfs, so trying to decide between the two.

Show threadCMDR_HornSep 17, 2025
I’ve never done raid with btrfs. I’ve only used it for OS disks, so I couldn’t really say it’d be a good option. I do trust zfs though.
Show threadFUCKING_CUNOSep 17, 2025
At least they aren’t all the same age, so the chances of multiple failures at the same time is reduced!
Show threadCMDR_HornSep 17, 2025
True, but resilvering all those drives scares ms.
Show threadClay_pidginSep 17, 2025
What does silvering mean?
Show threadCMDR_HornSep 17, 2025

Basically moving blocks to rebalance/redundant a pool

Zfs term for rebuilding a raid array

blocksandfiles.com/2022/06/20/resilvering/

Show threadClay_pidginSep 17, 2025
Neat. Thank you!
Show threadryannathansSep 17, 2025
Did you handcraft this table from smart data?
Show threadunivers3manSep 17, 2025
Artisinal handcrafted tables.
Show threadCMDR_HornSep 18, 2025
Yeah, that was the dull part.