Reference Guide

Chapter 4 SCSI Commands
INQUIRY Command (12h)
DLT-S4 Interface Reference Guide 35
Table 16 INQUIRY Command
Descriptor Block — Field
Descriptions
Standard Inquiry Data
Page
4
Figure 7 shows the Standard Inquiry Data page format.
Figure 7 Standard Inquiry Data
Page —Data Format
Field Description
EVPD Enable Vital Product Data. If set to 0, the drive returns the
Standard Inquiry Data. If EVPD is set to 1, the drive
returns the Vital Product Data Page specified by Page
Code.
Page Code Specifies the
Vital Product Data Page that the drive is to
return when EVPD is set to 1. Figure 9
shows the Page
Codes for the Vital Product Data pages the drive
supports.
Allocation
Length
Specifies the number of bytes of inquiry information the
drive is allowed to return to the initiator. The drive does
not return Error status if the value in this field truncates
the requested information.
Bit
7 6 5 4 3 2 1 0
Byte
0 Peripheral Qualifier Peripheral Device Type
1 RMB Reserved
2 Version
3 Obsolete NormACA HiSup Response Data Format
4 Additional Length
5 SCCS ACC ALUA 3PC Reserved
6 BQue EncServ VS MultiP MChngr Obsolete Addr16
7 RelAdr Obsolete Wbus16 Sync Linked Obsolete CmdQue VS
8 — 15
(MSB)
Vendor Identification (QUANTUM)
(LSB)