When you power off the secondary storage system – HP StorageWorks XP Remote Web Console Software User Manual
Page 210
storage systems. When powering off the primary storage systems, you must power off the supervisor DKC
first, and then the subordinate DKCs.
Caution: If you want to power off the primary storage system, please contact your HP account team
and ask them to power off the storage system.
If data volume pairs are split and the primary storage system is powered off as mentioned above, you
can resume remote copy operations by taking the following steps:
1.
Power on the primary storage system.
If more than one primary storage system is to be used with extended consistency groups, power on
the subordinate DKCs first, and then the supervisor DKC.
2.
If the primary storage system is ready to resume remote copy operations, please restore the data
volume pairs that have been split, and then confirm that the status of the data volume pairs is
Pending duplex or Duplex. This operation must be performed at the primary site.
After you take these steps, remote copy operations will be resumed. The primary storage system will be
able to respond to read journal commands issued by the secondary storage system.
NOTE:
To power off both the primary and secondary storage systems at the same time, please see
When You Power Off the Secondary Storage System
” on page 210. If the system is powered-off without
changing the status of all data volume pairs to Suspend, and then you turn the power back on, the status
of all data volume pairs could be suspended according to a failure.
When You Power Off the Secondary Storage System
If you want to power off the secondary storage system during remote copy operations, you must ensure,
before powering off the storage system, that all data volume pairs or mirrors (i.e., pairs of journal groups)
are split, and that the status of all the data volume pairs is Suspend.
If more than one primary and secondary storage systems are used with extended consistency groups, you
must split all data volume pairs in the extended consistency groups before powering off the secondary
storage systems. When powering off the secondary storage systems, you must power off the supervisor
DKC first, and then the subordinate DKCs.
Caution: If you want to power off the secondary storage system, please contact your HP account team
and ask them to power off the storage system.
If data volume pairs are split and the secondary storage system is powered off as mentioned above, you
can resume remote copy operations by taking the following steps:
1.
Power on the secondary storage system.
If more than one secondary storage system is to be used with extended consistency groups, power
on the subordinate DKCs first, and then the supervisor DKC.
2.
If the secondary storage system is ready to resume remote copy operations, please restore the
data volume pairs that have been split, and then confirm that the status of the data volume pairs
is Pending or Duplex. This operation must be performed at the primary site.
After you take these steps, remote copy operations will be resumed. The secondary storage
system will be able to issue read journal commands to the primary storage system. If you want
to power off both the primary and secondary storage systems at the same time, please see
When You Power Off the Primary and Secondary Storage Systems at the Same Time
Important: If you turn the power off without changing the status of all data volume pairs to Suspend,
and then you turn the power back on, the status of all data volume pairs could be suspended according
to a failure.
210
Power Management for Disk Storage Systems and Network Relay Devices