User's Guide

Quantum Scalar Intelligent Libraries SCSI Reference Guide Guide 21
Device Identification Page (83h)
Peripheral Qualifier – The return value 000b indicates that the library supports the peripheral device type
at the specified LUN. This field returns 011b if no peripheral device types are supported at that LUN.
Peripheral Device Type – For Media Changer logical units, this field returns 01000b (08h) to indicate it is
a media changer device. For the Controller logical unit, this field returns 01100b (0Ch) to indicate it is a
Controller Device. If an unsupported LUN was specified, this field returns 11111b (1Fh), which indicates that
the device type is unknown.
Page Code – Returned as 83h, indicating this page.
Page Length – Returns the remaining number of bytes following this field.
Identification Descriptors
The general format of identification descriptors are as follows:
Table 13 Device Identification Page (83h)
Bit
Byte
76543210
0 Peripheral Qualifier Peripheral Device Type
1 Page Code (83h)
2 Reserved
3 Page Length (n-3)
Identification Descriptors (see Table 14
)
4
:
First Identification Descriptor
:
:
n
Last Identification Descriptor
Table 14 Identification Descriptors
Bit
Byte
76543210
0 Protocol Identifier Code Set
1 PIV Rsvd Association Identifier Type
2 Reserved
3 Identifier Length (n-3)
4
:
n
Identifier