The incoming copy queue for a cluster lists those volumes waiting to be copied to a
cluster.
Each cluster maintains its own list of copies to acquire, then satisfies that
list by requesting copies from other clusters in the grid according to queue priority.
Prioritization of volumes that are acquired to satisfy the copy queue occurs according to virtual
volume copy type in the following order:
Immediate
Synchronous-deferred
Immediate-deferred
Deferred
Virtual volume copy types can be more precisely under each of the parent categories listed
above. Acquisition of volumes to satisfy copy queue requests will exhaust all volume copy types in
one parent category before making a request from another parent copy type. Figure 1 depicts the order in which
copy types are acquired to satisfy incoming copy queue requests.Figure 1. Order of copy queue prioritization