Download: Exchange 2010 Server Role Requirements Calculator Version: 20.9 Filename: E2010Calc20.9.xlsm
Important: The results of the Exchange 2010 calculator are not applicable to...
Updated Apr 22, 2020
Version 2.0
Blog Post
Ross,
I see the issue is still there. Let me go through an example with the default tier settings (24,000 mailboxes):
Single Site - 3 mailbox servers (modified from default of 3) and 3 copies.
Calculator Results:
Normal Run Time - 33 databases
After first server failure - 50 databases
MaximumActivedatabases set to 50
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?
Anyways, I now see that I can support 2 server failures but it tells me that my new maximumactivedatabases is 99? This doesn't make sense even with automatic *over to a DAG member in another site. It should still be 50 in my eyes. Before, if 1 server failed, 2 servers would pick up the whole slack and your maximumactivedatabases was 50. Now we're adding a 4th server and if 2 servers go down, you still have 2 servers like before picking up all the slack. Maximumactivedatabases should still be 50.
Seems like 2 bugs to me.
I see the issue is still there. Let me go through an example with the default tier settings (24,000 mailboxes):
Single Site - 3 mailbox servers (modified from default of 3) and 3 copies.
Calculator Results:
Normal Run Time - 33 databases
After first server failure - 50 databases
MaximumActivedatabases set to 50
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?
Anyways, I now see that I can support 2 server failures but it tells me that my new maximumactivedatabases is 99? This doesn't make sense even with automatic *over to a DAG member in another site. It should still be 50 in my eyes. Before, if 1 server failed, 2 servers would pick up the whole slack and your maximumactivedatabases was 50. Now we're adding a 4th server and if 2 servers go down, you still have 2 servers like before picking up all the slack. Maximumactivedatabases should still be 50.
Seems like 2 bugs to me.