I have Unity 5.0(1) ES70 on server 2003 running Unified. Partner store is Exchange 2003. There are 2 Exchange servers.
Every night the Exchange servers run a backup. They are using a method which changes the blocks to 'read only' during the backup so the database is stable. I've been told that this process takes just 10 seconds, then it should be back online.
Unity sees this as the store going off line, and it doesn't come back online for 36min for the first Exchange and 27 min for the second Exchange server.
I haven't been able to find any information yet on exactly how Unity sees the stores and any keepalive or timeout valuues associated.
Has anyone seen this?