Testing 8.0.1 - ZFS - Disk Failure

[newmember]

I have two mirrored drives with a spare for 3 x 3TB drives.
All drives are hot swapable.
When I pull ada4p2 for example the status of the pool stays the same with no degregation. When I pull drive from the first pair the same result no degregation.


Is this correct behavior?




Current status:

Code:

[root@freenas-2] ~# zpool status
  pool: tank1
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank1       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada0p2  ONLINE       0     0     0
            ada1p2  ONLINE       0     0     0
        spares
          ada2p2    AVAIL

errors: No known data errors

  pool: tank2
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank2       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada3p2  ONLINE       0     0     0
            ada4p2  ONLINE       0     0     0
        spares
          ada5p2    AVAIL

errors: No known data errors

Pulled ada4p2:

Code:

[root@freenas-2] ~# zpool status
  pool: tank1
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank1       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada0p2  ONLINE       0     0     0
            ada1p2  ONLINE       0     0     0
        spares
          ada2p2    AVAIL

errors: No known data errors

  pool: tank2
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank2       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada3p2  ONLINE       0     0     0
            ada4p2  ONLINE       0     0     0
        spares
          ada5p2    AVAIL

errors: No known data errors

I will pull ada1p2 now:

Code:

[root@freenas-2] ~# zpool status
  pool: tank1
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank1       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada0p2  ONLINE       0     0     0
            ada1p2  ONLINE       0     0     0
        spares
          ada2p2    AVAIL

errors: No known data errors

  pool: tank2
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        tank2       ONLINE       0     0     0
          mirror    ONLINE       0     0     0
            ada3p2  ONLINE       0     0     0
            ada4p2  ONLINE       0     0     0
        spares
          ada5p2    AVAIL

errors: No known data errors