On Fri, 8 May 2015, Linda Kateley wrote: >> 1. Add new drive (/dev/sdj) >> 2. zpool offline media > Offline is used for a disk not a whole pool Oh, ok. Wouldn't it be a good idea to take the whole pool down? I'm going to shut down everything that uses that data, for sure. > Yea, it depends on how much data it needs to read to rebuild. If it's empty > probably a couple seconds, if it is a 11+1 full 4TB drives maybe several > days.. The pool is made of two 3+1 3TB raidz1, and it's like 60% full. I don't know what is where but when that one disk was not functioning correctly I was seeing a LOT of errors. A scrub of that pool takes at least 60 hours, even if I manage to not access it at all (yes, the better part of a week). This thing was DEFINITELY not built for speed, it was built for reliability (and space) (: --