Seagate Fibre Channel Interface - Manual (Page 187)

Fibre Channel Interface Manual, Rev. D 173
12.6.1 Vital product data pages
The initiator requests the vital product data information by setting the EVPD bit to one and specifying the page
code of the desired vital product data. If the disc drive does not implement the requested page it returns Check
Condition status. The sense key is set to Illegal Request and the additional sense code is set to Invalid Field in
CDB.
This section describes the vital product data page structure and the vital product data pages that are applicable
to the disc drive. These pages are optionally returned by the Inquiry command and contain specific product
information about the disc drive. The vital product data includes unit serial numbers, device operating defini-
tions, firmware release numbers, servo ROM and RAM release numbers and the date code from the manufac-
turer’s defect log.
Field definitions (listed alphabetically)
Page Code
Page 00h provides a list of all supported vital product data pages. The Page Code field is set to the value of the Page Code
field in the Inquiry command descriptor block. Page Code C3 is only returned by ASA-II firmware.
Page Length
The length (in bytes) of the supported page list. If the allocation length is too small to transfer all of the page, the page
length is not adjusted to reflect the truncation. The page length reported by ASA-1 firmware is 06. The page length reported
by ASA-II firmware is 07. The total number of bytes returned (N) will be Page Length +4 in either case.
Peripheral Qualifier and Peripheral Device Type
00h A direct-access device (magnetic disc) is connected to this logical unit.
Supported Page List
Contains a list of all vital product data page codes implemented for the disc drive in ascending order beginning with Page
Code 0h. See Table 107.
Table 106: Vital product data page
Bit
Byte
7 6 5 4 3 2 1 0
0 Peripheral Qualifier Peripheral Device Type
1
Page Code (00h)
2 0 0 0 0 0 0 0 0
3
Page Length
4
:
8
Supported Page List
Table 107: Vital product data page codes
Page Code Description
00h
Supported vital product data pages
80h
Unit Serial Number page
81h
Implemented Operating Definition page
83h
Device Identification page
C0h
Firmware Numbers page
C1h
Date Code page
C2h
Jumper Settings page
C3h
Device Behavior page
Table
number
106
106
106
106