slayme1974 1 Posted September 24, 2016 I was just doing some research about raid and I found this interesting article http://www.zdnet.com/article/raidfail-dont-use-raid-5-on-small-arrays/ its and old article but it's still interesting. Share this post Link to post Share on other sites
Jeruselem 637 Posted September 25, 2016 Raid 10 or 1+0 is the way to go with disks going so cheap these days. Share this post Link to post Share on other sites
Master_Scythe 521 Posted September 26, 2016 SnapRAID is my go to solution for media storage :) Share this post Link to post Share on other sites
joemeow 2 Posted September 27, 2016 I would love to read about raid levels i guess it has 6+ levels Share this post Link to post Share on other sites
Kothos 53 Posted August 30, 2018 Why does a rebuild stop if it encounters a URE? Couldn't it just skip that bit/sector and continue rebuilding the rest of the data? The data is still there, and a tape backup or any other backup will also have missing data at the point of that URE, yet it's not fatal. Share this post Link to post Share on other sites
Master_Scythe 521 Posted September 5, 2018 On 8/30/2018 at 11:11 AM, Kothos said: Why does a rebuild stop if it encounters a URE? Couldn't it just skip that bit/sector and continue rebuilding the rest of the data? The data is still there, and a tape backup or any other backup will also have missing data at the point of that URE, yet it's not fatal. Depends what was hit. RAID uses a much larger... lets call it 'window' of data to determine how to rebuild missing files. Unlike say, RaidZ (ZFS) which checksums each file\block individually. For this reason, ZFS can skip a file, and restore the rest of them. However, while there may be a good chance nothing is lost, on RAID5, if that "bad bit of data" causes a decent size calculation error, you can't be sure what you've lost. Honestly, there's no reason not to use ZFS these days if it's a dedicated storage machine. Otherwise, if you're using RAID1 features, you can look into BTRFS 1 Share this post Link to post Share on other sites