To prevent email lost or data inconsistency during the Windows Update or SP / CU installation, do I have to stop all of the Exchange Server services before I run the updates or upgrade ?
I also wondering if I should change the MS Exchange Information Store
service startup mode to Delayed Start
from the default Automatic
on all mailbox server to allow the server to be brought online safely after the patching reboot ?
Therefore if it is yes, then I can safely take VM snapshot on the mailbox server role to easy roll back if the updates causing some issue.
Source of my inspiration: http://www.vmware.com/files/pdf/exchange-2010-on-vmware-support-and-licensing-guide.pdf
Please correct me if I'm wrong.