Quantum 1200 Series DAT Autochanger Uživatelská příručka stáhnout pdf (Strana 192)

PERSISTENT RESERVE OUT Command (5Fh) SDLT 600 SCSI Interface Guide

4-150 January 2005 81-81200-02 REV A01

Table 4-85. PERSISTENT RESERVE OUT Parameter List — Field Descriptions

Field Name Description

Reservation

Key

Contains an 8-byte token that the application client provides to the drive to

identify the initiator that is the source of the PERSISTENT RESERVE OUT

command. For all service actions except Register and Ignore Existing Key, the

drive verifies that the Reservation Key in the PERSISTENT RESERVE OUT

command matches the Reservation Key that is registered for the initiator from

which the command is received. If there is no match, the drive returns a

RESERVATION CONFLICT status. The Reservation Key of the initiator is

valid for all service action and scope values.

Service

Action

Reservation

Key

Contains information needed for three different service actions: Register, Pre-

empt, and Pre-empt & Clear. The Service Action Reservation Key is ignored

for all other service actions.

For the Register service action, the Service Action Reservation Key field

contains the new Reservation Key to be registered.

For the Pre-empt and the Pre-empt & Clear service actions, the Service Action

Reservation Key contains the reservation key of the pre-empted persistent

reservations. For the Pre-empt and the Pre-empt & Clear service actions, any

failure of the Service Action Reservation Key to match any registered keys

results in the drive returning a RESERVATION CONFLICT status.

Scope-

Specific

Address

Ignored.

Spec_I_PT Specify Initiator Ports. Not supported. Must be set to 0.

All_TG_PT All Target Ports. Not supported. Must be set to 0.

APTPL Activate Persist Through Power Loss. Valid only for Register and Register and

Ignore Existing Key service actions. It is ignored for all other types of service

actions.

If the last valid APTPL bit value the drive received is 0, loss of power in the

drive releases any persistent reservations and removes all reservation keys. If

the last valid APTPL bit value is 1, the drive retains all persistent reservations

and all reservation keys for all initiators even if power is lost and later restored.

The most recently received valid APTPL value from any initiator governs the

drive’s behavior in the event of a power loss.

1 2 ... 187 188 189 190 191 192 193 194 195 196 197 ... 293 294

Komentáře k této Příručce

Žádné komentáře

Quantum 1200 Series DAT Autochanger Uživatelská příručka Strana 192

Komentáře k této Příručce

Související produkty a manuály pro Software Quantum 1200 Series DAT Autochanger