There are certain restrictions when a TC volume in PAIR status is used as a Volume Migration volume.
The following restrictions must be followed:
- Set I/O rates less than 50 IOPS while migrating volumes. If the I/O rate is more than 50 IOPS, volumes might not be migrated.
- If a data path failure occurs, remove the failure and then migrate the volume.
- If an external volume or a DP-VOL is used, information from before the volume was migrated is displayed in the secondary system Device Manager - Storage Navigator window. If the Volume Migration is completed and the TC pair is split and resynchronized, the volume's information is updated.
- Do not migrate a P-VOL and S-VOL at the same time. If you do, a host I/O timeout error can occur.
- Do not change the status of a volume during migration. If you do, the status might not change.