[Nick7]

ZFS se siri tako da se POOL prosiri.
Dodaje se novi VDEV.

Npr, ako imas RAIDZ (ekvivalent RAID5), mozes ga prosiriti s novim VDEV-om.
Taj VDEV moze biti novo RAIDZ polje, moze biti neko mirror polje, ili cak single device (u kom slucaju ako taj disk prdne, gubis SVE u tom pool-u).

Primjer kreiranje jednog raidz polja i sirenja (sa po 3 device-a):

root@test:~# zpool create testpool raidz /tmp/z1 /tmp/z2 /tmp/z3
root@test:~# zpool status
  pool: testpool
 state: ONLINE
 scrub: none requested
config:

        NAME         STATE     READ WRITE CKSUM
        testpool     ONLINE       0     0     0
          raidz1-0   ONLINE       0     0     0
            /tmp/z1  ONLINE       0     0     0
            /tmp/z2  ONLINE       0     0     0
            /tmp/z3  ONLINE       0     0     0

errors: No known data errors
root@test:~# zfs list
NAME       USED  AVAIL  REFER  MOUNTPOINT
testpool  91.9K  1.96G  28.0K  /testpool
root@test:~# zpool add testpool raidz /tmp/z4 /tmp/z5 /tmp/z6      
root@test:~# zpool status
  pool: testpool
 state: ONLINE
 scrub: none requested
config:

        NAME         STATE     READ WRITE CKSUM
        testpool     ONLINE       0     0     0
          raidz1-0   ONLINE       0     0     0
            /tmp/z1  ONLINE       0     0     0
            /tmp/z2  ONLINE       0     0     0
            /tmp/z3  ONLINE       0     0     0
          raidz1-1   ONLINE       0     0     0
            /tmp/z4  ONLINE       0     0     0
            /tmp/z5  ONLINE       0     0     0
            /tmp/z6  ONLINE       0     0     0

errors: No known data errors
root@test:~# zfs list
NAME       USED  AVAIL  REFER  MOUNTPOINT
testpool  97.9K  3.91G  28.0K  /testpool
root@test:~#

Osim ovoga, moguce je i extendati diskove (ako su recimo SAN diskovi ili nesto sl.), i onda isto tako prosiriti POOL.