SCSI Commands: 41BRESERVE
Page
181
3.29.1.3
RESERVE(10) Command Descriptor Block
Byte
Bits
7 6 5 4 3 2 1 0
0
Operation Code (56h)
1
Ignored LUN
Reserved
2
Reserved
3
Ignored Third Party Device ID
4
Reserved
5
Reserved
6
Reserved
7
Reserved
8
Reserved
9
Control
3.29.1.4
RESERVE(10) Command Field Descriptions
Field Bytes
Bits
Description
Operation
Code
0
The Operation code for the 10-byte version of RESERVE is 57h.
Ignored
Logical
Unit
1
5-7
The LUN field is vestigial from the SCSI-1 standard and is ignored.
Ignored
Third Party
Device ID
3
This field is ignored by the drive.
Reserved
All reserved bits must be 0.
Control 9
See
SCSI Command Control Byte Format on page 25.
3.29.2
RESERVE Completion Status
Code Message Description
00h
Good
Status
•
The drive is ready to perform any appropriate command.
•
The drive remains in any previously set mode.
•
The drive is reserved for the use of the specified ID.
•
The tape position is not changed.
02h
Check
Condition
Use the REQUEST SENSE command to retrieve status information. Possible
Sense Keys are:
Code Message
Description
02h
Not Ready
No cartridge is in the drive.
03h
Media Error
Unrecoverable data error encountered.
04h
Hardware Error
Parity error on the SCSI bus or drive hardware
failure.
05h
Illegal Request
The Command Descriptor Block is invalid.
06h
Unit Attention
The cartridge was changed, or the drive was
reset prior to this command.
Summary of Contents for LTO 4
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