
6-10
SCSI REFERENCE 1014826
CHAPTER 6—INQUIRY (12h)
6.3.3 UNIT SERIAL NUMBER DATA PAGE (PAGE CODE 80h)
When the EVPD bit is 1 and the Page Code is 80h, the library returns the Unit
Serial Number page as described below.
Peripheral Qualifier – Byte 00, Bits 7 through 5
The value returned for this field is 0, indicating that the media changer is
connected to this Logical Unit (LUN 1).
Peripheral Device Type – Byte 00, Bits 4 through 0
The value returned for this field is 08h, which identifies the library as a
medium changer device.
Page Code – Byte 01
The value returned for this field is 80h, which is the Page Code for the Unit
Serial Number page.
Page Length – Byte 03
The value returned for this field is 0Ch, which indicates the number of
remaining bytes in this page (excluding this byte).
Unit Serial Number – Bytes 04 through 15
The value returned for this field is the serial number for the library. The MSB is
contained in byte 04. The library serial number is set at the factory.
Bit
Byte
7 6 5 4 3 2 1 0
00 Peripheral Qualifier Peripheral Device Type
01 Page Code (80h)
02 Reserved
03 Page Length (0Ch)
04 (MSB)
... Unit Serial Number
15 (LSB)
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