My Exchange Server is 2013 and has a DAG architecture.
The current version is CU 16, and I want to upgrade to CU 23.
Question 1: Can I upgrade directly from CU16 to CU23?
Condition 1. The .NET Framework needs to be upgraded to 4.7.2 or higher, right?
Condition 2.Need to consider the upgrade path?
Question 2: How do I perform the upgrade steps?
I assume that the mail box database is switched from the first to the second, and then the installation of CU23 is started directly. After the installation is completed, the mail box database is switched from the second to the first, and then
to the second Exchange. Installation of CU23.
Is the above correct?
Please help me with your guidance, thank you
PS. If there is a problem with upgrading cu23, can I use snapshot backup to restore the operation of the dag architecture?