Failover, Failback, Failover failback – HP XP Racks User Manual

Page 394: Operating procedure during a storage system, Failure (with no information

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6.

From the primary site, execute the YKRESYNC FORWARD command for the Continuous Access
Journal Z copy pair between the primary site and remote site 2.

YKQUERY

YKRESYNC FORWARD

YKEWAIT GOTO(DUPLEX)

7.

Resume operation at the primary site.

Operation returns to normal.

Operating procedure during a storage system failure (with no information lost from
memory) at the primary site and remote site 1

Failover

If a storage system failure, with no information lost from memory, occurs at the primary site and
remote site 1, perform the same failover procedure as the one used when a storage system failure,
with no information lost from memory, occurs at those sites. See

“Failover” (page 391)

in

“Operating

procedure during a storage system failure (with information lost from memory) (volatile) at the
primary site and remote site 1” (page 391)

.

Failback

If a storage system failure, with no information lost from memory, occurs at the primary site and
remote site 1, perform the same failback procedure as the one used when a storage system failure,
with no information lost from memory, occurs at those sites. For details, see

“Failback” (page 392)

in

“Operating procedure during a storage system failure (with information lost from memory)

(volatile) at the primary site and remote site 1” (page 391)

.

In step 3, however, you do not have to register the journal group, and execute the YKRESYNC
command instead of the YKMAKE command.

394 Maintenance and troubleshooting operations

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