Intel RAID Controllers Alert Code Decoding White Paper

Decoding Intel® RAID Sense Code Messages Intel® RAID Controllers: SAS Software Stack
Revision 1.0
8
Table 1: CDB Content
bit→
↓byte
7 6 5 4 3 2 1 0
0 Operation code
1 LUN Reserved
2 Reserved
3 Reserved
4 Allocation length
5 Control
Byte 0 (green in the table above) is the operation code (command). SCSI Operation codes are
listed in the table below: For example, the 2a operational code indicates that a WRITE
command was issued.
Table 2: CDB SCSI Commands
Operation Code Command Name Type Notes
00 TEST UNIT READY Mandatory
01 REZERO UNIT or REWIND Optional
03 REQUEST SENSE Mandatory
04 FORMAT UNIT Mandatory
05 READ BLOCK LIMITS Manufacturer Specific Tape drives only
06 Manufacturer Specific Manufacturer Specific
07 REASSIGN BLOCKS Optional
08 READ (06) Optional
09 Manufacturer Specific Manufacturer Specific
0A WRITE (06), PRINT for printers Optional Tape drives only
0B SEEK (06) Optional
0F READ REVERSE Manufacturer Specific
10 WRITE FILEMARKS Optional Tape drives only
11 SPACE Optional
12 INQUIRY Mandatory
13 VERIFY (06) Manufacturer Specific
14 RECOVER BUFFERED DATA Manufacturer Specific
15 MODE SELECT (06) Optional
16 RESERVE or RESERVE UNIT Mandatory
17 RELEASE or RELEASE UNIT Mandatory
18 18 COPY Optional
19 ERASE Optional Tape drives mandatory
1A MODE SENSE (06) Optional Tape drives mandatory
1B START/STOP UNIT Optional
1C RECEIVE DIAGNOSTIC RESULTS Optional
1D SEND DIAGNOSTICS Mandatory
1E PREVENT/ALLOW MEDIUM REMOVAL Optional