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RELEASE UNIT
0
1
2
4
5
3rdPty
This bit is always zero because third-party reservation is not supported.
Third-Party Device ID
This bit is always zero because third-party reservation is not supported.
0
1
R
enables the host to release any reservation it may have on the
ELEASE UNIT
drive. Reserving a device is a way of ensuring exclusive access to that device
from a single initiator for the period of the reservation. The drive may be
reserved using a
RESERVE
The 10-byte RELEASE UNIT command is supported by all drives. Its
functionality is the same as for the 6-byte command, but it also supports third-
party reservation.
Pre-Execution Checks:
Illegal Field
Deferred Error
Command Descriptor Block:
6-Byte
7
6
5
Reserved (0)
10-Byte
7
6
5
Reserved (0)
command.
Unit Attention
4
3
Operation Code (17h)
3rd Pty
Third-Party Device ID
Reserved (0)
Control
4
3
Operation Code (57h)
3rd Pty
Reserved (0)
17h/57h
2
1
0
Rsvd(0)
2
1
0
LongID
Rsvd(0)
Commands 121
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