Copy Priority
Specify the priority of this Copy/Mirror/Migrate operation relative to other Copy/Mirror/Migrate and Replication operations. A High setting means this operation takes precedence over other Copy/Mirror/Migrate and Replication operations. A Medium setting means this operation has the same priority as other Copy/Mirror/Migrate and Replication operations. A Low setting means this operation has lesser precedence than other Copy/Mirror/Migrate and Replication operations.
Historical Data
By checking Copy historical replay information, you are copying the volume and all associated replays. If you do not select this option, you exclude replay data from being copied.