Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
198
18.13
PERSISTENT RESERVE OUT (5F)
Table 165 PERSISTENT RESERVE OUT (5F)
Byte
Bit
7
6
5
4
3
2
1
0
0
Command Code = 5Fh
1
Reserved = 0
Service Action
2
Scope=0
Type
3-6
Reserved = 0
7-8
Parameter List Length = 18h
9
VU = 0
Reserved = 0
FLAG
LINK
The PERSISTENT RESERVE OUT command is used to request service actions that reserve the drive for the
exclusive or shared use of the initiator. The command uses other service actions to manage and remove such
reservations. This command is used in conjunction with the PERSISTENT RESERVE IN command, and should not
be used with the RESERVE and RELEASE commands.
Note: If a PERSISTENT RESERVE OUT command is received when a RESERVE is active for the drive, the command will be
rejected with Reservation Conflict status.
Parameter List Length must be 18h. If not, Check Condition status will be returned, with sense key of Illegal
Request and additional sense code of Parameter List Length Error.
18.13.1
Service Action
The following service action codes are supported.
Table 166 PERSISTENT RESERVE OUT, Service Action Code
Code
Name
Description
00h
Register
Register a reservation key
01h
Reserve
Create a persistent reservation using a reservation key
02h
Release
Release a persistent reservation
03h
Clear
Clear all reservation keys and all persistent reservations
04h
Preempt
Preempt persistent reservations from another Initiator
05h Preempt and Abort
Preempt persistent reservations from another Initiator and clear the
task set for the preempted Initiator
06h
Register and Ignore existing key
Register a reservation key
07h-1Fh
Reserved
Reserved