SCSI Commands

INQUIRY Command (12h) (continued)

Table 5–7 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 5–8 lists the

 

page codes for the Vital Product Pages supported by the drive.

Allocation

Specifies the number of bytes of inquiry information the drive is allowed to

Length

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 5–8 Vital Product Data - Page Codes

Page Code

Description

 

 

00h

Supported Vital Product Pages Page

80h

Unit Serial Number Page

C0h

Code Build Information Page

C1h

Subsystem Components Revision 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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Quantum DLT 7000 Tape System

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Image 120
Quantum Instruments DLT 7000 manual Inquiry Command 12h, Standard Inquiry Data, Vital Product Data Page Codes

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