We currently have 1x HUB/CAS/Transport and 1x Mailbox setup on our Exchange Server 2010 version 14.01.0218.013 running on Hyper-V Cluster and we are planning to patch with Service Pack 3.
The challenge is we need to minimize the downtime. Is it possible for us to copy the VHD and deploy the patch without network connection then use that updated VHD to test. I am just thinking that it might require connection to AD.
Maybe you have better advise to patch the Exchange servers with a short downtime only. Thanks