When Power Stops Unexpectedly; When Power Is Removed From Primary Or Secondary System; When Power Is Removed From Network Relay Devices; Power-Off Storage Systems Intentionally - HP StorageWorks P9000 User Manual

When power stops unexpectedly

This section explains what happens when power is removed from systems or network relay devices
due to an unexpected reason.
CAUTION:
Continuous Access Journal Z operations; otherwise the pairs could be suspended with a failure.

When power is removed from primary or secondary system

If power is removed from the primary system during remote copy operations, the primary
system assumes that a failure has occurred and splits all pairs. When the primary system splits
pairs, the secondary system also assumes that a failure occurs and splits all pairs.
If power is removed from the secondary system during remote copy operations, the secondary
system assumes that a failure has occurred and splits all pairs. When the secondary system
splits pairs, the primary system also assumes that a failure occurs and splits all pairs.

When power is removed from network relay devices

If power is removed from a network relay device during remote copy operations, the primary and
secondary systems assume that a failure has occurred and split all pairs.

Power-off storage systems intentionally

This section explains what should be noted when you intentionally power off systems or network
relay devices.
NOTE: To intentionally power off the primary or secondary system, contact your HP account
team and ask them to power off the system.
To power off primary and secondary systems at the same time, see
secondary systems at the same time" (page

Power-off the primary or secondary system

To power off during copy operations
1. Insure that all pairs or mirrors are split and that the status of all the pairs is Suspend.
CAUTION:
Suspend, and then you turn the power back on, the status of all data volume pairs could
become suspended when there is a failure. If you power off the secondary system while the
primary system is copying data by creating or recovery pair operations, the pair status of the
secondary system might remain Suspending. In this case, delete the pair forcibly on both the
primary and secondary systems and create a pair again.
If multiple primary and secondary systems are used with EXCTGs, insure that all pairs in
EXCTGs are split. When powering off the primary systems, power off the supervisor DKC first,
and then the subordinate DKCs.
2. Turn power off.
3. When ready, power on the system.
CAUTION:
Access Journal Z operations; otherwise the pairs could be suspended with a failure.
4. When the system is ready to resume copy operations, on the primary site, restore the pairs
that have been split.
5. Confirm that the status of the pairs is Pending duplex or Duplex.
When a system is powered on, you must wait five (5) minutes before performing
If you turn the power off without changing the status of all data volume pairs to
Wait five (5) minutes after powering on a system before performing Continuous
104).
Manage power-off for systems and network devices 103
"Power-off primary and