HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)
When You Po wer Of
fthe Primaryand SecondaryStorage Systemsatthe Same Time
To power off the p
rimary and secondary storage systems at the same time, the primary storage system
must be powered
off b efore the secondary storage system is powered off. To power on the primary
and secondary s
torage systems again, the secondary storage sy stem must be powered on before the
primary storage system is powered on.
The following is the procedure for powering off the primary and secondary storage systems at the
same time:
1. Split data vol
ume
pairs that will be affected by powering off the primary and secondary
storage systems.
For example, if two primary storage systems and one secondary storage system are co nnected
to each other and you want to power off one of the primary storage systems and the secondary
storage system, you must split data volume pairs that are defined between the remaining one
primary storage system and the primary storage system, because these data volume pairs will be
affected by powering off the storage systems.
2. After the splitting of the pairs finishes, confirm that the status of all the pairs is changed to
PSUS at the
primary storage system.
3. Power off t
he primary storage system as described in
“When You
Power Off the Primary Storage System” on page 107. Do not power o n the
primary storage system yet.
4. Power off the secondary storage system as described in
“When You Power Off the Secondary Storage System” on page 107.
5. Power on the secondary storage system.
6. If the secondar y storage system is ready to resume remote co py operations, power on the
primar
y
storage system.
7. If the p
rimary storage system is ready to resume remote copy operations, resume the data
volum
e
pairs that have been split at the primary storage system. Confirm that the status of the
data volume pairs is changed to CO PY or PAIR.
Note
: After you turned the power on or off for both the primary and seconda ry storage system at the
same
time, if the status of a data volume pair of the primary storage subsystem is PSUS and the status of
a
data volume pair of the secondary storage subsystem is PAIR, you must suspend the data volume pair
of the
secondary storage system by using Remote Web Console. After confirming that the statuses of
the
data volume pair of primary storage system and secondar y storage system are PSUS, restore the
data volume pair that has been split at the primary storage system.
When You Power Off Networ k Relay Devices
To power off a n etwork relay device du ring remote copy operations, you must ensure, before powering
off the device, that all data volume pairs or mirrors (that is, pairs of journal groups) are split, and that
the
status of all the data volume pairs is PSUS.
If data volume pairs are split and the network relay device is powered off as mentioned above, you can
resume remote copy operations by taking the following steps:
1. Power on the network relay device.
2. If the network relay d evice is ready for remote copy operations, restore the data volume pairs
that
have been split, and then confirm that the status of the data volume p airs is COPY or PAIR.
This op eration must be performed at the primary site.
Removing the Relationship Bet ween the Primary and the
Secondary Storage Systems
To remove the relationship bet ween the primary and the secondar y storage systems and then remove all
the
logical paths between the two storage systems, both the primary storage system administrator and the
secondary storage system administrator must per form this o peration:
108
Configuring Storage Systems and Logical Paths