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Status Future consideration
Workspace IBM Copy Services Manager (CSM)
Created by Guest
Created on Jun 8, 2021

RELATED IDEAS

CSM TOCHECK ON HDS HYPERSWAP that a copy destination of 1 LCU does not come from more than 4 source LCUs

CSM team confirmed that per current design there is a check made by CSM that one source LCU has no more than 4 target, but there is not a check made into the opposite direction that a copy destination of 1 LCU does not come from more than 4 source LCUs.
WE NEED THIS ADDITIONAL CHECK ON CSM

Idea priority High
  • Guest
    Reply
    |     Jun 9, 2021

    Checking on the initial start in no way guarantees that you won't hit the condition mentioned. It is possible that the target LSS sets up additional paths after the fact causing you to hit the max after failing over to that site. In addition, maximum values for hw may change in future releases. It is important to keep maximum values in you replication planning procedures in order to avoid the issue. CSM does offer a Topology Overview and a Topology Details view now on the CSM GUI that can help you see what the sessions on the given server are currently configured for. This might help you see which LSSs might be defined to hit a hardware maximum. We will consider the request but highly suggest you look at alternative solutions and not rely on this request alone to avoid the situation.

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