HP XP P9500 Storage - Manual (Page 91)

2. After the pairs are split, confirm that their status is PSUS at the primary system.
3. Power off the primary system.
4. Power off the secondary system.
5. Power on the secondary system.
6. When the secondary system is ready to resume copy operations, power on the primary system.
CAUTION: Wait five (5) minutes after powering on a system before performing Continuous
Access Journal operations; otherwise the pairs could be suspended with a failure.
7. When the primary system is ready to resume copy operations, restore the pairs that have been
split at the primary system. Confirm that the status of the pairs is changed to COPY or PAIR.
After turning power on or off for both the primary and secondary system at the same time, if pair
status at primary system is PSUS and a status of a pair of secondary storage system is PAIR, use
Remote Web Console to suspend the pair of the secondary system. After confirming that the statuses
of the pair on both systems is PSUS, restore the pair at the primary system.
CAUTION: If you turn the power off without changing the status of all data volume pairs to PSUS,
and then you turn the power back on, the status of all data volume pairs could be suspended
according to a failure.
Power off network relay devices
To power off a network relay device during copy operations
1. Insure that all pairs or mirrors are split and that the status of all the pairs is PSUS.
2. Power off the device.
3. When ready power on the network relay device.
4. When the network relay device is ready for copy operations, from the primary storage system,
restore the pairs that have been split.
5. Confirm that pair status is COPY or PAIR.
Manage power-off for systems and network devices 91