Specifications

RD READ (6) command and READ (10) command
WR WRITE (6) command and WRITE (10) command
NWR Commands except the following:
! READ (6) command and READ (10) command
! WRITE (6) command and WRITE (10) command
! RESERVE and RELEASE command
If any key is registered, the drive returns a RESERVATION CONFLICT status.
! PERSISTENT RESERVE IN command and PERSISTENT RESERVE OUT command
SH SHared: The
drive executes the command from all initiators.
EX EXclusive: The
drive executes the command from initiator which holds the persistent
reservation and rejects the command from the other initiators with RESERVATION
CONFLICT status.
PH ProHibited: The
drive rejects the command from all initiators.
EO Exclusive registrant Only: The
drive executes the command from initiator which has
registered a key and rejects the command from the other initiators with RESERVATION
CONFLICT status.
A1 The
drive rejects new PERSISTENT RESERVATION on any types and returns
RESERVATION CONFLICT status.
A2 The
drive accepts new PERSISTENT RESERVATION with Write Exclusive Registrants
Only type and Exclusive Access Registrants Only type. The drive rejects new
PERSISTENT RESERVATION with Write Exclusive type and Exclusive Access type and
returns RESERVATION CONFLICT status.
NoNoYesYes
Exclusive Access Registrants
Only (6)
NoNoYesYes
Write Exclusive Registrants
Only (5)
YesYesYesYesExclusive Access (3)
YesYesYesYesWrite Exclusive (1)
6531
New Type
Figure 116. Conflict between new and existing PERSISTENT RESERVATION
Ultrastar 146Z10 hard disk drive specifications
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