Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

We currently have a server with 5x3TB disks configured as a RAIDZ:

zpool status
pool: raid-5x3
state: ONLINE
scrub: none requested

NAME                                              STATE     READ WRITE CKSUM
raid-5x3                                          ONLINE       0     0     0
  raidz1                                          ONLINE       0     0     0
    ada1p2                                        ONLINE       0     0     0
    replacing                                     ONLINE       0     0     0
      ada2p2                                      ONLINE       0     0     0
      gptid/a767b8ef-1c95-11e2-af4c-f46d049aaeca  ONLINE       0     0     0
    ada4p2                                        ONLINE       0     0     0
    ada5p2                                        ONLINE       0     0     0
    ada3p2                                        ONLINE       0     0     0

errors: No known data errors

We want to add 5 more 3TB disks into the same machine, and enlarge the current volume ... is that possible?

I am still confused by the terminology -- vdev/zpool/volume/dataset -- want to make sure I do it right.

As I understand it, I will need to make a new RAIDZ out of the 5 new disks -- is that a vdev? Then add that vdev to the current pool, and we will end up with 10x3TB - 2x3TB = 24TB of storage, where each set of 5 disks can sustain 1 disk failure.

Just not sure what the exact steps are to do this !

Also -- not sure why zpool status still says "replacing" -- it's been like that for several weeks, since I replaced a disk with a hot spare. Is it safe to remove the old disk now?


share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.