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SCSI Commands

5-18 Quantum DLT 8000 Tape System

INQUIRY Command (12h) (continued)

Table 5–7 INQUIRY Command Descriptor Block — Field Descriptions

Field Description

CmdDt Command Support Data. If CmdDt = 0 and EVPD (see below) = 0, the drive

returns the Standard Inquiry Data. If CmdDt = 1 with EVPD = 0, the drive

returns the Command Data specified by Page Code/Operation. Information

about Command Support Data is provided in Figure 5-12 and Table 5-13.

EVPD Enable Vital Product Data. If EVPD = 0 and CmdDt (see above) = 0, the drive

returns the Standard Inquiry Data. If EVPD = 1and CmdDt = 0, the drive returns

the Vital Product Data Page specified by Page Code/Operation Code.

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.

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.

5.4.1 Standard Inquiry Data Page

Figure 5–5 shows the format of the Standard Inquiry Data page returned by the drive.

1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 407 408

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