IBM IC35L036UWDY10 Hard Drive Specifications - Page 141

Service Action Reservation Key, 13.5.4 Scope-specified address, 13.5.5 Extent length

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8.13.5.3 Service Action Reservation Key On Register service action, the drive saves the key specified in the Service Action Reservation Key field as a key of initiator requesting PERSISTENT RESERVATION OUT command. On Preempt and Clear service action, the reservation which has a key specified in the Service Action Reservation Key field is preempted. On other service actions, this field is ignored. 8.13.5.4 Scope-specified address Parameter in the Scope-specified address field is ignored by the drive. 8.13.5.5 Extent length Parameter in the Extent length field is ignored by the drive. 8.13.5.6 APTPL The APTPL (Active Persist Through Power Loss) is valid only for the Register service action. The drive ignores the APTPL in other service actions. The following table shows the relationship between the last valid APTPL value and information held by the drive. Information held by the drive The last valid APTPL value 0 1 Registration all keys are set to 0 retained Persistent Reservation all are removed retained Generation counter set to 0 set to 0 Figure 119. APTPL and information held by a drive 8.13.5.7 Generation counter The drive increments the Generation counter when Register service action or Preempt and Abort service action complete successfully. Ultrastar 146Z10 hard disk drive specifications 125

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8.13.5.3 Service Action Reservation Key
On Register service action, the drive saves the key specified in the Service Action Reservation Key field
as a key of initiator requesting PERSISTENT RESERVATION OUT command.
On Preempt and Clear service action, the reservation which has a key specified in the Service Action
Reservation Key field is preempted.
On other service actions, this field is ignored.
8.13.5.4 Scope-specified address
Parameter in the Scope-specified address field is ignored by the drive.
8.13.5.5 Extent length
Parameter in the Extent length field is ignored by the drive.
8.13.5.6 APTPL
The APTPL (Active Persist Through Power Loss) is valid only for the Register service action. The drive
ignores the APTPL in other service actions.
The following table shows the relationship between the last valid APTPL value and information held by the
drive.
set to 0
set to 0
Generation counter
retained
all are removed
Persistent Reservation
retained
all keys are set to 0
Registration
1
0
The last valid APTPL value
Information
held by the drive
Figure 119. APTPL and information held by a drive
8.13.5.7 Generation counter
The drive increments the Generation counter when Register service action or Preempt and Abort service
action complete successfully.
Ultrastar 146Z10 hard disk drive specifications
125