Error occurred when you issue a Start command
This condition occurs when you issue a Start command on a session.
Problem
When a storage system becomes available, after being unavailable to the Copy Services Manager server, it might take some time for all pairs to change from an unknown state. Do not issue a Start command if any of the participating pairs or any nonparticipating pairs that will become participating pairs as a result of that Start command, are in an unknown state. For example, during disaster recovery or during planned maintenance. Based on the Start command that you issue, you can determine which pairs will participate. For example, if the Start command involves all three sites in a Metro Global Mirror session (Start H1->H2->H3 or Start H2->H1->H3), then there should not be any pairs in an unknown state at those sites.
Action
- Ensure that the participating pairs or any nonparticipating pairs that will become participating pairs as a result of that Start command, are not in an unknown state. Use the Role Details page in the Copy Services Manager GUI to verify the state of the pairs.
- Evaluate the error to determine if you can fix the problem manually (for example, you might not have enough physical paths defined), and then attempt to restart.
- Remove the copy set from the session, and then add it back again.