I currently have 2007 exchange server with SP3 UR 15 installed I have recently installed exchange 2010 With SP1 on windows 2008 r2 server and am working on getting them to coexist for mailbox migration.
I already know I need to update my exchange 2007 SP3 UR 15 to UR 21 and have a maintenance window to do it this weekend.
My question pertains to the exchange 2010 upgrade from SP1 to SP3 UR 14. Many articles I am reading talk about multiple email server situations and how to approach the install for that situation but I ONLY have 1 exchange server that has all roles required for exchange to function installed on it.
Are there specific directions/websites links/references for upgrading from exchange 2010 SP1 to SP3 UR 14 for ONLY one exchange 2010 server?