SCSI Description
5–34 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
INQUIRY Command (12h) (continued)
Table 5–12 INQUIRY Command Descriptor Block — Field Descriptions (continued)
Field Description
Page Code or Specifies the Vital Product Data Page or Command Support Data which is to
Operation Code be returned by the drive when EVPD is set. Specifies the SCSI Operation Code for
command support data to be returned by the drive when CmdDt is set. A
CHECK CONDITION status is returned if this field specifies an unsupported Page
or Operation Code or if both EVPD and CmdDt are set. Table 5-14 lists the Page
Codes for the Vital Product Pages supported by the drive. Table 5-18 lists the
operation codes for the CmdDt information supported by the drive.
Allocation Length Specifies the number of bytes of inquiry information the drive is allowed to
return to the initiator during the command's data-in buffer transfer. Error status
is not returned if the value in this field truncates the requested information.