Datasheet

Command Specifications
4-2 C141-C008
4.1.2 INQUIRY (12)
Bit
Byte
7 6 5 4 3 2 1 0
0 X‘12’
1 0 0 0 0 0 0 CmdDt EVPD
2 Page Code/Operation Cpde
3 0 0 0 0 0 0 0 0
4 Transfer Byte Length
5 0 0 0 0 0 0 0 0
This command transfers the information showing the IDD's characteristics
(INQUIRY data) to the application client. This command is executed
immediately without queuing in a system which issues only commands with no
tags or links.
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 other than the LUN field of the CDB.
• It is impossible to send INQUIRY data because of an IDD hardware error.
• An unrecoverable error was detected on the SCSI 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 bytes 1, the "EVPD (enable vital product data)" bits, the "CmdDt (Command
Support Data)" bits, and byte 2, the "Page code" field in the CDB are enabled
only in the case that transfer of the SCSI-2/SCSI-3 mode's INQUIRY data is
specified. In the case of the SCSI-1/CCS mode, zero must be set in these bits and
in this field. And if both the "EVPD" and "CmdDt" bits are one, this command is
terminated by a CHECK CONDITION status (ILLEGAL REQUEST [=5] /
Invalid Field in CDB [=24-00]).