Titanium zpool list.txt

# zpool status
  pool: rpool
 state: DEGRADED
status: One or more devices could not be used because the label is missing or
        invalid.  Sufficient replicas exist for the pool to continue
        functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
  scan: scrub repaired 0B in 0 days 00:02:01 with 0 errors on Sun Feb  9 00:26:02 2020
config:

        NAME                                                  STATE     READ WRITE CKSUM
        rpool                                                 DEGRADED     0     0     0
          mirror-0                                            DEGRADED     0     0     0
            9491572793337818349                               UNAVAIL      0     0     0  was /dev/disk/by-id/ata-Hitachi_HTS541040G9SA00_MPBBP0X2J9THTM-part3
            ata-Hitachi_HTS541040G9SA00_MPBBP0X2JA2E6M-part3  ONLINE       0     0     0

errors: No known data errors