Replacing a failed disk in a ZFS/ZPOOL raid array

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This has been used on a SPARC S7-2, but should be relevant to most modern sparc based servers:

1. Identify the failed disk in the zpool array: 

 # zpool status
   pool: rpool
  state: DEGRADED
  
 config:
 
         NAME                       STATE      READ WRITE CKSUM
         rpool                      DEGRADED      0     0     0
           mirror-0                 DEGRADED      0     0     0
             c0t5000CCA02F613ACCd0  ONLINE        0     0     0
             c0t5000CCA02D0F6C44d0  UNAVAIL       0     0     0

2. Find the device path for the drive you want to remove: 

 # diskinfo D:devchassis-path
 D:devchassis-path                   c:occupant-compdev
 ----------------------------------  ---------------------
 /dev/chassis/SYS/HDD0/disk          c0t5000CCA02F613ACCd0
 /dev/chassis/SYS/HDD1/disk          c0t5000CCA02D0F6C44d0
 /dev/chassis/SYS/HDD2               -
 /dev/chassis/SYS/HDD3               -
 /dev/chassis/SYS/HDD4               -
 /dev/chassis/SYS/HDD5               -
 /dev/chassis/SYS/HDD6               -
 /dev/chassis/SYS/HDD7               -
 /dev/chassis/SYS/MB/EUSB_DISK/disk  c1t0d0
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