HP XP P9500 Storage - Manual (Page 102)

When power stops unexpectedly
This topic explains what happens when power is removed from systems or network relay devices
due to an unexpected reason.
CAUTION: When a system is powered on, you must wait five (5) minutes before performing
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.
Powering-off systems intentionally
This topic 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 “Powering-off primary and
secondary systems at the same time” (page 103) .
Powering-off the primary or secondary system
To power off during copy operations
1.
Ensure that all pairs or mirrors are split and that the status of all the pairs is Suspend. Otherwise
the pairs could be suspended due to failure.
If multiple primary and secondary systems are used with EXCTGs, ensure 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: Wait five (5) minutes after powering on a system before performing Continuous
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 or Duplex.
Correcting errors made when powering-off
If a secondary system remains in Suspending status because you powered-off while the primary
system was copying data, delete the pair forcibly in both primary and secondary system and then
recreate the pair.
102 Maintaining the system