Hey All.
Since we have been adding more and more users to exchange 2010 we decided to upgrade the memory on our mailbox server roles. These are two servers part of a dag. We upgraded the one of our servers from 32gb to 128gb, with additional processor to support the memory. What we have seen is a drastic drop in performance for any user on a database that is active on that server. Response times in outlook, after the upgrade, are constantly at 100-200ms. Before the upgrade the response times were in the 20ms or below, often unde 10ms.
Any suggestions on why adding memory to just the mailbox server role would hurt performance?