Hitachi HUS154530VLF400 User Manual

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification

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The Parameter List required to perform the PERSISTENT RERSERVE OUT command is defined in the table below.  All 
fields must be sent on all PERSISTENT RESERVE OUT commands, even if the field is not required for the specified service 
action. 

Reservation Key contains an 8-byte value provided by the initiator, and identifies the initiator that issued the PERSISTENT 
RESERVE OUT command.  The Reservation Key must match the registered reservation key for the initiator for all service 
actions except REGISTER and REGISTER AND IGNORE EXISTING KEY.

Service Action Reservation Key contents vary based on the service action.  For REGISTER and REGISTER AND IGNORE 
EXISTING KEY, the Service Action Reservation Key must contain the new reservation key to be registered.  For PREEMPT 
and PREEMPT AND ABORT , the field contains the reservation key of the persistent reservation that is being preempted.  
This field is ignored for all other service actions.

Scope-Specific Address  is ignored.

APTPL (Activate Persist Through Power Loss) bit is valid only for REGISTER and REGISTER AND IGNORE EXIST-
ING KEY, and is ignored for all other service actions.  If the last valid APTPL bit value received is zero, power loss will cause 
all persistent reservations to be released, and all reservation keys to be removed.  If the last valid APTPL bit value received is 
one, any persistent reservation and all reservation keys for all initiators will be retained across power cycles.