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Chapter 5 Configuring Storage Systems and Logical Paths 5-27
Hitachi Universal Replicator for IBM /OS User’s Guide
When You Power Off Network Relay Devices
If you want to power off a network relay device during remote copy operations,
you must ensure, before powering off the device, 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 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 device is ready for 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.