IBM Ultrastar 36LZX Specifications page 135

WR WRITE command and WRITE EXTENDED command
NWR Commands except following,
Ÿ READ command and READ EXTENDED command
Ÿ WRITE command and WRITE EXTENDED command
Ÿ RESERVE and RELEASE command
If any key is registered, the target returns a RESERVATION CONFLICT status.
Ÿ PERSISTENT RESERVE IN command and PERSISTENT RESERVE OUT
command
SH SHared: The target executes the command from all initiators.
EX EXclusive: The target executes the command from initiator which holds the the persistent
reservation and rejects the command from the other initiators with RESERVATION CONFLICT
status.
PH ProHibited: The target rejects the command from all initiators.
EO Exclusive registrant Only: The target executes the command from initiator which has registered
a key and rejects the command from the other initiators with RESERVATION CONFLICT
status.
A1 The target rejects new PERSISTENT RESERVATION on any types and returns
RESERVATION CONFLICT status
A2 The target accepts new PERSISTENT RESERVATION with Write Exclusive Registrants Only
type and Exclusive Access Registrants Only type. The target rejects new PERSISTENT
RESERVATION with Write Exclusive type and Exclusive Access type and returns
RESERVATION CONFLICT status
Exsisting Type
New Type
Write Exclusive (1)
Exclusive Access (3)
Write Exclusive Registrants
Only (5)
Exclusive Access Registrants
Only (6)
Figure 105. Conflict between new and existing PERSISTENT RESERVATION
1
Yes
Yes
Yes
Yes
Ultrastar 36LZX hard disk drive specifications
3 5
Yes Yes
Yes Yes
Yes No
Yes No
135
6
Yes
Yes
No
No