Operating instructions

6-10
SCSI REFERENCE 1012975
CHAPTER 6—INQUIRY (12h)
6.3.4 DEVICE IDENTIFICATION PAGE (PAGE CODE 83h)
The Device Identification page allows the autoloader to report its device
identifiers, including its product identifier and serial number. The autoloader
returns the Device Identification page when the EVPD bit in the CDB is 1 and
the Page Code is 83h
Peripheral Qualifier – Byte 00, Bits 7 through 5
The value returned for this field is 0, indicating that the autoloader is a single
LUN device. If you specify a LUN other than 0 when you issue this command,
the value returned for this field is 011b (binary), which indicates that the
autoloader is not capable of supporting a physical device on the specified
logical unit.
Peripheral Device Type – Byte 00, Bits 4 through 0
The value returned for this field is 08h, identifying the autoloader as a
medium changer device. If you specify a LUN other than 0 when you issue
this command, the value returned for this field is 1Fh, indicating that the
peripheral device type is unknown. The remainder of the standard inquiry
data is returned normally for the autoloader.
Bit
Byte
7 6 5 4 3 2 1 0
00 Peripheral Qualifier Peripheral Device Type
01 Page Code (83h)
02 Reserved
03 Page Length
04 Reserved Association Code Set
05 Reserved Identifier Type
06 Reserved
07 Identifier Length
08 (MSB)
... Vendor Identification
15 (LSB)
16 (MSB)
... Product Identification
31 (LSB)
32 (MSB)
... Unit Serial Number
43 (LSB)