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SCSI Commands
5-18 Quantum DLT 4000 Tape Drive
INQUIRY Command (12h) (continued)
Table 5–8 INQUIRY Command Descriptor Block - Field Descriptions
Field Description
EVPD Enable Vital Product Data. If 0, the drive returns the Standard Inquiry Data
page. If 1, the drive returns the Vital Product Data page specified in Page
Code.
Page Code Specifies which Vital Product Data page is to be returned by the drive. This
field must be 0 if EVPD is 0. A CHECK CONDITION with ILLEGAL REQUEST
status is returned if this field specifies an unsupported page code.
Table 5–9 lists the page codes for the Vital Product Pages 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 phase. Error status is
not returned if the value in this field truncates the requested information.
Table 5–9 Vital Product Data - Page Codes
Page Code Description
00h Supported Vital Product Pages Page
80h Unit Serial Number Page
C0h Code Build Information Page
5.4.1 Standard Inquiry Data Page
Figure 5–5 shows the format of the Standard Inquiry Data page returned by the
drive.
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