We have NMM 3.0.1.2.280 amd exchange 2010. We had a DAG with node N1 servicing mailbox MB01, node N2 servicing mailbox

MB02. We could recover mailboxes with no problems.

Now we extended out DAG and added 2 nodes, N3 servicing mailbox MB03 and node N4 servicing mailbox MB04.

We now can only recover mailboxes from MB03 and MB04. We can no longer recover mailboxes from MB01 or MB02.

Error messages:

NMM .. Index retrieve of metadata key failed for index path APPLICATIONS:\...

NMM .. Error 4312 retrieving metadata key for restore APPLICATIONS:\...

Recover process has failed to locate correct logical savetime for requested selections -- error 4312..

The is a knowledge base notes with this error messages and it suggest to update to NM 8.2.x.

But since some recoveries work I don't think this will solve the problem.

It seems to be a problem to extend the DAG and rather update the DAG metadata key.

Can someone help me?

regards

Bernd