Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 283)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.40.3 Send Diagnostic Page A0h
The Device LED Control Page A0h allows the initiator to turn on or off the device fault LED light.
Table 227: Device LED Control Page - Send Diagnostic
The page begins with a four-byte page header which specifies the page code and length. A SBDL (Set Bad Device Light) bit of
one turns the device LED on, zero turns the device LED off. If the target detects an error in the passed parameter data it shall
terminate the command with CHECK CONDITIONS Status. The sense key shall be set to Illegal Request and the Additional
Sense code set to Illegal Field in CDB.
Byte
Bit
7 6 5 4 3 2 1 0
0 Page Code = A0h
1 Reserved = 0
2-3
(MSB)
Page Length = 0002h
(LSB)
4 Reserved = 0
5 Reserved = 0 SBDL