Controlling the simultaneous-write function

Specifying when the simultaneous-write operations occur
You can specify simultaneous-write operations for any primary storage pool that is the target of client store sessions, server import processes, or server data-migration processes. You can also disable the simultaneous-write function.

Specifying copy pools and active-data pools for simultaneous-write operations
The maximum number of copy storage pools and active-data pools to which data can be simultaneously written is three. For example, you can write data simultaneously to three copy storage pools. You can also write data simultaneously to two copy storage pools and one active-data pool, and so on.

Specifying how the server reacts to a write failure during simultaneous-write operations
Write failures to copy or active-data pools might occur during while data is being simultaneously written. If a write failure occurs during a client store session, you can specify whether to continue or discontinue the operation.

Rules of inheritance for the simultaneous-write function
When switching primary storage pools during client store sessions or server import processes, certain rules of inheritance apply to copy storage pool lists, active-data pool lists, and the setting of the COPYCONTINUE parameter.