This is on a brand new installation of 3.0 RC3 on an Adaptec ASR-2405. I'm not sure what information is going to be useful so please let me know, but for now, here's the basic zpool show:

pool: backup state: DEGRADED status: One or more devices are faulted in response to persistent errors. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Replace the faulted device, or use 'zpool clear' to mark the device repaired. scan: none requested config:

    NAME         STATE     READ WRITE CKSUM
    backup       DEGRADED     0     0     0
      raidz1-0   DEGRADED     0     0     0
        c0t79d0  FAULTED      0     0     0  too many errors
        c0t80d0  DEGRADED     0     0     0  too many errors
        c0t81d0  DEGRADED     0     0     0  too many errors
        c0t82d0  DEGRADED     0     0     0  too many errors
        c0t83d0  DEGRADED     0     0     0  too many errors

errors: No known data errors

pool: syspool state: DEGRADED status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-9P scan: scrub repaired 0 in 0h1m with 0 errors on Tue Aug 10 00:33:57 2010 config:

    NAME        STATE     READ WRITE CKSUM
    syspool     DEGRADED     0     0     0
      c0t0d0s0  DEGRADED     0     0     0  too many errors

errors: No known data errors