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Page 26
Field Descriptions
Device Identification Page (83h)
Field Descriptions
Identification Descriptor Data Format
Bits
Byte
7
6
1
2
3
4-15
Field
Bytes
Peripheral Qualifier
0
Peripheral Device
0
Type
Page Code
1
Reserved
2
Page Length
3
Drive
4-15
Serial Number
The Device Identification Page contains one or more device identification descriptors
that uniquely identify the particular device.
Bits
Byte
7
6
0
Peripheral Qualifier
1
2
3
4-...
...-...
...- n
Field
Bytes
Peripheral Qualifier
0
Peripheral Device
0
Type
Page Code
1
Reserved
2
Page Length
3
Identification
4-n
Descriptor
Bits
Byte
7
6
0
Reserved
1
Reserved
5
4
3
Page code
Reserved
Page Length
Drive Serial Number
Bits
Description
5-7
Always 000b.
0-4
Normally 01h to indicate a sequential access device.
7Fh indicates that a logical unit is not present. This
value is returned when an invalid LUN is specified.
Always 80h, indicating the Unit Serial Number Page
Always 0
Always 0Ch to indicate 12 additional bytes of data.
12 bytes of ASCII data giving the unit serial number.
5
4
3
Peripheral Device Type
Page code
Reserved
Page Length
Identification Descriptor
...
Identification Descriptor
Bits
Description
5-7
Always 000b.
0-4
Normally 01h to indicate a sequential access device.
7Fh indicates that a logical unit is not present. This
value is returned when an invalid LUN is specified.
Always 83h, indicating the Device Identification Page
Always 0
n -3, indicating the total length of all Identification De-
scriptors following.
One or more Identification Descriptor. See the Identifi-
cation Descriptor data format below.
5
4
3
Code Set
Identifier Type
LTO SCSI Interface Manual
2
1
0
2
1
0
2
1
0
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