Device Reservations
Julyl 2017 Operation and Configuration Details 23
TABLE 3-2 Persistent Reservation Management Method
Command
Library is Reserved by a different Initiator with a
Persistent Reservation
Non-Registered
Initiators
Registered Initiators
Exclusive Access
Reservation
ALL Registrants or
Exclusive Access
Registrants Only
Initialize Element Status (07h) Conflict Conflict Allowed
Initialize Element Status w/Range (37h/E7h) Conflict Conflict Allowed
Inquiry (12h) Allowed Allowed Allowed
Log Sense (4Dh) Allowed Allowed Allowed
Mode Select (15h/55h) Conflict Conflict Allowed
Mode Sense (1Ah/5Ah) Conflict Conflict Allowed
Move Medium (A5h) Conflict Conflict Allowed
Persistent Reserve In (5Eh) Allowed Allowed Allowed
Persistent Reserve Out (5Fh)
SA=Register
SA=Reserve
SA=Release
SA=Clear
SA=Preempt
SA=Preempt/Abort
SA=Register and Ignore
SA=Register and Move
Allowed
Conflict
Conflict
Conflict
Conflict
Conflict
Allowed
Conflict
Allowed
Conflict
Allowed
1
Allowed
Allowed
Allowed
Allowed
Conflict
Allowed
Conflict
Allowed
1
Allowed
Allowed
Allowed
Allowed
Conflict
Position to Element (2Bh) Conflict Conflict Allowed
Prevent/Allow Media Removal (1Eh)
Prevent = 0
Prevent = 1
Allowed
Conflict
Allowed
Conflict
Allowed
Allowed
Read Element Status (B8h)
HP Bridged Tape Drive
IBM Bridged Tape Drive
Conflict
Allowed
Conflict
Allowed
Allowed
Allowed
Release (17h/57h) Conflict Conflict Allowed
Report LUNs (A0h) Allowed Allowed Allowed
1
Report Target Port Groups (A3h)
HP Bridged Tape Drive
IBM Bridged Tape Drive
Allowed
N/A
2
Allowed
N/A
2
Allowed
N/A
2
Request Sense (03h) Allowed Allowed Allowed
Request Volume Element Address (B5h) Conflict Conflict Allowed
Reserve (16h/56h) Conflict Conflict Allowed
Send Diagnostics (1Dh) Conflict Conflict Allowed
Send Volume Tag (B6h) Conflict Conflict Allowed
Note –
1
The reservation is not released.
2 The Report Target Port Groups command is not supported by the IBM Bridged Tape Drive.
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