Cache must be operable for the primary and secondary systems. If not, pairs cannot be created. The secondary system cache must be configured to adequately support TrueCopy remote copy workloads and any local workload activity.
Note the
following:
- VSP E series :
Only Basic shared memory can be used with TrueCopy. Adding shared memory expands the capacity of the pairs to be created.
- VSP E series: Cache and shared memory that is no longer necessary can be removed.
Note:
Neither cache nor shared memory can be added to or removed from the storage system when pair status is COPY. When either of these tasks is to be performed, first split any pairs in COPY status, and then resynchronize the pairs when the cache or shared memory operation is completed.