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3-82 Sun StorEdge 5310 NAS Troubleshooting Guide • December 2004
Target Volume
Caution – A volume copy will overwrite all data on the target volume. Ensure that
you no longer need the data or have backed up the data on the target volume before
starting a volume copy.
A target volume maintains a copy of the data from the source volume, and can be a
standard volume, the base volume of a Failed or Disabled snapshot volume, or a
Remote Volume Mirror primary volume in an active mirrored pair.
Note – IMPORTANT The target volume capacity must be equal to or greater than
the source volume capacity.
When a volume copy is started, data from the source volume is copied in its entirety
from the source volume to the target volume.
While the volume copy has a status of In Progress, Pending, or Failed, no read or
write requests to the target volume will be allowed. After the volume copy is
complete, the target volume automatically becomes read-only to hosts, and write
requests to the target volume will not take place. The Read-Only attribute can be
changed in the Copy Manager only after the volume copy is completed.
Creating a Volume Copy
The Create Copy Wizard guides you through the process of selecting a source
volume from a list of available volumes, selecting a target volume from a list of
available volumes, and setting the copy priority for the volume copy. After you have
completed the Wizard dialogs, the volume copy starts and data is read from the
source volume and then written to the target volume.
Caution – A volume copy will overwrite all data on the target volume and
automatically make the target volume read-only to hosts. After the volume copy
completes, you can use the Copy Manager to disable the Read-Only attribute for the
target volume.
The Copy Manager allows you to monitor the volume copy after it has been created.
From the Copy Manager, a volume copy may be re-copied, stopped, or removed, and
its attributes, including the copy priority and the target volume Read-Only attribute,
can be modified. The status of a volume copy can be viewed in the Copy Manager.
Also, if you need to find out what volumes are involved in a volume copy, use the
Copy Manager or the Storage Array Profile.