Chapter 2. Command Support
Notes:
1. For this chapter, a megabyte (MB) is equal to 1 048 576 bytes.
2. Binary numbers are represented by numbers followed by b. Hexadecimal
numbers are represented by 0-9 and A-F followed by h. Numbers with no suffix
can be assumed to be decimal.
Table 1. Supported Common Commands
Command Name
Operation
Code
SCSI
Class
1
SCSI
Spec
2
Page
Applicable Conditions
3
RVC UAT NRD WRP MFC DCC
ERASE 19h M SSC 6 yyyyyy
INQUIRY 12h M SPC-2 7 ------
LOAD/UNLOAD 1Bh O SSC 14 y y - - y y
LOCATE 2Bh O SSC 15 y y y - y y
LOG SELECT 4Ch O SPC-2 16 y y - - - y
LOG SENSE 4Dh O SPC-2 17 y -----
MODE SELECT (6) 15h M SPC-2 26 y y - - - y
MODE SELECT (10) 55h O SPC-2 26 y y - - - y
MODE SENSE (6) 1Ah M SPC-2 27 y y ----
MODE SENSE (10) 5Ah O SPC-2 27 y y ----
PERSISTENT
RESERVE IN
5Eh O SPC-2 36 y y ----
PERSISTENT
RESERVE OUT
5Fh O SPC-2 39 y
4
y----
PREVENT ALLOW
MEDIUM REMOVAL
1Eh O SPC-2 41 y y ----
READ 08h M SSC 42 y y y - y y
READ ATTRIBUTE 8Ch O SPC-3 43 y y y - - y
READ BLOCK LIMITS 05h M SSC 48 y y ----
READ BUFFER 3Ch O SPC-2 49 y -----
READ POSITION 34h M SSC 52 y y ----
RECEIVE
DIAGNOSTIC
RESULTS
1Ch O SPC-2 53 y y ----
RELEASE UNIT (6) 17h M SPC-2 54 - y ----
RELEASE UNIT (10) 57h M SPC-2 54 - y ----
REPORT DENSITY
SUPPORT
44h M SSC 55 yy----
REPORT LUNs A0h M SSC 58 ------
REQUEST SENSE 03h M SPC-2 59 ------
RESERVE UNIT (6) 16h M SPC-2 63 y y ----
RESERVE UNIT (10) 56h M SPC-2 63 y y ----
REWIND 01h M SSC 64 y y y - y y
SEND DIAGNOSTIC 1Dh M SPC-2 65 y y y - y y
SPACE 11h M SSC 81 y y y - y y
TEST UNIT READY 00h M SSC 82 y y y - - y
VERIFY 13h O SSC 82 y y y - y y
WRITE 0Ah M SSC 83 yyyyyy
© Copyright IBM Corp. 2001, 2000
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