Inquiry command (12h) (continued), 2 vital product data pages, 1 supported vital product data pages page (00h) – Quantum 10K II User Manual
Page 104
SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
5–37
INQUIRY Command (12h) (continued)
Table 5–13 Standard Inquiry Data Page — Field Descriptions (continued)
Field Name
Value
Description
Clocking
11
The contents of this field define the setting of the double-edge
clocking option (See Chapter 6). Note that the clocking field does not
apply to asynchronous transfers of data. Options available are:
Code
Description
00b
Indicates the device server supports only Single Transition (ST)
01b
Indicates the device server supports only Double Transition
(DT)
10b
Reserved
11b
Indicates the device server supports ST and DT
QAS
0
Quick Arbritrate Support. If the value of this field is 1, it indicates that
the device server supports the quick arbitrate feature. A value of 0
indicates that the device server does not support this feature. 0 is
default setting.
IUS
0
Information Unit Supported. If the value of this field is 1, it indicates
that the device server supports information units. A value of 0 indicates
that the device server does not support information units. Default is 0.
5.11.2 Vital Product Data Pages
The Vital Product Data pages that can be returned by the drive are described in the
following paragraphs in the sequence shown in Table 5-14.
5.11.2.1 Supported Vital Product Data Pages Page (00h)
The Supported Vital Product Data Pages page (Figure 5-12) provides a directory of
the Vital Product Data Pages that are supported by the drive. Table 5-14 lists the
supported pages.
Bit
Byte
7
6
5
4
3
2
1
0
0
Peripheral Qualifier
= 0
Peripheral Device Type = 0
(Direct Access Device)
1
Page Code (00h)
2
Reserved
3
Page Length = 08h
4 - 10
Supported Page List
(see Table 5-14)
Figure 5–12 Supported Vital Product Data Pages Page — Data Format
Table 5–14 Vital Product Data — Page Codes
Page Code
Description
Size In Bytes
00h
Supported Vital Product Pages Page
11
80h
Unit Serial Number Page
16
81h
Implemented Operating Definition Page
9
82h
ASCII Implemented Operating Page
32
83h
Device Identification Page
28
C0h
Firmware Revision Page
40
C1h
Quantum Manufacturing Number Page
20
C4h
Negotiated Rate Information Page
8