In order to manage a remote mirror and copy configurations, you
need to know the state of your volumes.
- Simplex
- The initial state of a volume. A volume pair relationship has not been
established between the source and target volumes or a remote mirror and copy
relationship has been withdrawn.
- Pending
- The initial state of a defined volume pair. The remote mirror and copy
feature is in the process of copying data from the source volume to the target
volume. During the pending period, the volume pair is not synchronized.
- Duplex
- The state of a volume pair after remote mirror and copy has completed
the copy operation of the source volume to the target volume. At this time,
the volume pair is synchronized, and all writes have been applied from the
source to target volume.
- Suspended
- The state of the volume pair when the source storage unit cannot complete
a write operation to the target storage unit or when the volume pair has been
suspended manually.