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4.1.2
INQUIRY (12)
Bit
7
Byte
0
1
0
2
3
0
4
5
0
This command transfers the information showing the IDD's characteristics (INQUIRY data) to
the INIT.
This command is executed normally even in cases where the UNIT ATTENTION condition is
held, and the UNIT ATTENTION condition is not cleared. This command is also executed
normally when the disk drive is not in the ready state or even when an illegal logical unit
number (LUN) is specified.
A CHECK CONDITION status is reported for this command and it is terminated abnormally
only in the case that one of the following conditions is detected.
•
There is an error in the specifications of the CDB.
•
It is impossible to send INQUIRY data because of an IDD hardware error.
•
An unrecoverable error was detected on the FC bus.
•
An error detected during command execution was recovered in the IDD's error recovery
processing (Retry), but the mode which reports "RECOVERED ERROR" is specified in
the MODE SELECT parameter.
•
Applicability to overlapping command exception conditions (See Section 2.7.1.)
If the specification in the "EVPD" bits is "0," the IDD transfers the standard INQUIRY data,
mentioned later, to the INIT. On the other hand, if "1" is specified in the "EVPD" bits,
information called VPD (vital product data) is transferred to the INIT.
Byte 2 of the CDB, the "Page code" field specifies the type of VPD information that should be
transferred to the INIT if the "EVPD" bit is "1." If the "EVPD" bit is "0," zero must be
specified in this field. When specified except for "0", this command is terminated in "CHECK
CONDITION" status (ILLEGAL REQUEST / Invalid Field in CDB).
4 - 2
6
5
4
0
0
0
Page Code
0
0
0
Transfer Byte Length
0
0
0
C141-E054-02EN
3
2
X'12'
0
0
0
0
0
0
1
0
0
EVPD
0
0
0
0
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