Every time the system boots (or is shut down), the message is displayed on the console. Sometimes the following message is also displayed on the console and in the /var/adm/messages file:
WARNING: /iommu@0,10000000/sbus@0,10001000/SUNW,soc@2,0/SUNW,pln@a0000000,74127a/ssd@4,2 (ssd22): Error for Command: <undecoded cmd 0x35> Error Level: Fatal Requested Block: 0 Error Block: 0 Vendor: CONNER Serial Number: 93081LPT Sense Key: Aborted Command ASC: 0xb3 (<vendor unique code 0xb3>), ASCQ: 0x0, FRU: 0x0 WARNING: /iommu@0,10000000/sbus@0,10001000/SUNW,soc@2,0/SUNW,pln@a0000000,74127a/ssd@4,2 (ssd22): ssd_synchronize_cache failed (5)