INQUIRY 12h
C
omm
an
ds
45
Unit Serial Number page
The Unit Serial Number page contains a single value which is a 10-byte ASCII string. The string,
with the Vendor Identification and Product Identification fields in the standard Inquiry data,
uniquely identifies the drive.
Device Identification page
The Device Identification page contains information that identifies the tape drive uniquely. For
SCSI, a combination of the Vendor ID and Serial Number is returned. For Fibre Channel, the Port
and Device Names are returned as well
Identification Descriptors are constructed as follows:
7
6
5
4
3
2
1
0
0
Peripheral Qualifier (0)
Peripheral Device Type (1)
1
Page Code (80h)
2
Reserved (0)
3
Page Length (0Ah)
4
(MSB)
Serial Number
13
(LSB)
7
6
5
4
3
2
1
0
0
Peripheral Qualifier (0)
Peripheral Device Type (1)
1
Page Code (83h)
2
Reserved (0)
3
Page Length (
n
−
3)
4
(MSB)
Identification Descriptors
n
(LSB)
7
6
5
4
3
2
1
0
0
Protocol Identifier
Code Set
1
PIV
Rsvd (0)
Association
Identifier Type
2
Reserved (0)
3
Identifier Length (
n
−
3)
4
(MSB)
Identifier
n
(LSB)
Protocol
Identifier
0h Fibre Channel
1h Parallel SCSI
Code Set
1 The Identification Descriptor is a binary field.
2 The Identification Descriptor contains only ASCII data.
