I have Unity 2.46 installed in a Voice Mail only environment. I have exchange 5.5 running on the same box. This box is installed as a stand alone server and is not integrated with other exchange 5.5 servers, ie it is being used for voicemail only and not for unified messaging. Exchange 5.5 standard edition has a message store limit of 16 GB. I have reached this limit and exchange information store services have stopped. As a result of this the Unity services are down. Microsoft states that by upgrading to exchange 5.5 enterprise edition this limitation can be overcome. Can I upgrade the exchange 5.5 on the unity box from the private edition to enterprise edition without having to reinstall unity? After the upgrade, will unity continue to function as before.
Alternately, the only other option I have is to clean up the mailboxes and to defragment the databases.