User Manual

SCSI Commands Reference Manual, Rev. J 510
www.seagate.com Parameters for direct access devices
5.4.19 Unit Serial Number page (80h)
The Unit Serial Number page provides a product serial number for the target or logical unit. See Table 484 following.
PERIPHERAL QUALIFIER field and the PERIPHERAL DEVICE TYPE field
The PERIPHERAL QUALIFIER field and the PERIPHERAL DEVICE TYPE field are defined in standard INQUIRY data (see 3.6.2).
PAGE CODE field
The PAGE CODE field shall be set to the value defined in table 484.
PAGE LENGTH field
The PAGE LENGTH field specifies the length in bytes of the product serial number page. Older products that only support the Product Serial
Number parameter will have a page length of 08h, while newer products that support both parameters will have a page length of 14h. If the
ALLOCATION LENGTH is too small to transfer all of the page, the page length shall not be adjusted to reflect the truncation.
Product Serial Number field
The Product Serial Number field contains ASCII data that is vendor-assigned serial number. The least significant ASCII character of the serial
number shall appear as the last byte in the Data-In Buffer. If the product serial number is not available, the target shall return ASCII spaces (20h)
in this field.
Table 484 Unit Serial Number page (80h)
Bit
Byte
7 6 5 4 3 2 1 0
0 PERIPHERAL QUALIFIER PERIPHERAL DEVICE TYPE
1 PAGE CODE (80h)
2 Reserved
3 PAGE LENGTH
4
Product Serial Number. . .
n