Download: Exchange 2010 Server Role Requirements Calculator Version: 20.9 Filename: E2010Calc20.9.xlsm
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Updated Apr 22, 2020
Version 2.0
Blog Post
iamme-
regarding
"Now let's turn on Site Resilience. I also increased total number of HA copies to 4 and set the Site Resilient Copies to 1. I was offered 2 for Site Resilient Copies which doesn't make much sense since I set the mailbox servers in the Primary Datacenter to 3 and total copies to 4. 4-3 is 1 so why did it offer 2 for Site Resilient Copies? "
The second issue is a bug.
Ross
I'm not sure why you think you can't have 2 copies in the primary datacenter with 3 mailbox servers and 2 copies in the secondary datacenter. The number of mailbox servers in the primary datacenter only dictates the maximum number of copies you can have there - so with 3 servers you can have a maximum of 3 copies, but you could also deploy 2 copies.
regarding
"Now let's turn on Site Resilience. I also increased total number of HA copies to 4 and set the Site Resilient Copies to 1. I was offered 2 for Site Resilient Copies which doesn't make much sense since I set the mailbox servers in the Primary Datacenter to 3 and total copies to 4. 4-3 is 1 so why did it offer 2 for Site Resilient Copies? "
The second issue is a bug.
Ross
I'm not sure why you think you can't have 2 copies in the primary datacenter with 3 mailbox servers and 2 copies in the secondary datacenter. The number of mailbox servers in the primary datacenter only dictates the maximum number of copies you can have there - so with 3 servers you can have a maximum of 3 copies, but you could also deploy 2 copies.