We have a situation where an Exchange 2010 Server running on Windows 2008R2 within an ESXI VM is "freezing" every few days. This issue has been widely documented on the internet and seems to be a combination of above running on ESXI 4.1. We have taken many steps to rectify this issue including; building a new ISCSI SAN from local storage, removing the tape drive, introducing a new ESXI host, allocating more memory to video RAM and upgrading to ESXI 5.1 but the problem remains.
We may look to try ESXI 5.5 and a rebuild of the ESXI OS as apposed to an upgrade. But we're now at the stage where we need to consider a complete Exchange rebuild, this would involve adding a new Exchange Server, then migrating users/mailboxes across. So my question is two fold;
1. Can anyone suggest a resolution to the VM "locking up" issue where Exchange is accessible through the ESXI console but no peripheral/mouse etc movement works and everyone looses connectivity to the Server?
2. What’s the best procedure for introducing a new, replacement Exchange Server in a live environment?