Updates? Yes, updates. Both the Exchange 2007 Mailbox Role Calculator as well as the Exchange 2010 Mailbox Role Calculator have been updated.

The Exchange 2010 Mailbox Role Calculator has been updated to version 7.7 (was 6.3, so major update). This version includes the following enhancements:

• 32-core support;
• Fourth mailbox tier in the calculator;
• Two new columns to the primary data center “Active Database Configuration / DAG” table to expose the total number of databases activated in each site after server failure events. This change was added to expose cross-site database fail-over events;
• Option to activation block secondary data center mailbox servers that host HA database copies. This allows you to design a solution where you can activate the secondary data center in the event of a primary data center failure mode, or choose to activate a copy in the secondary data center manually, but prohibits Active Manager from automatically activating a copy in the secondary data center;
• Modified IOPS Multiplication Factor calculations from “Base + (Base * Multiplier)” to “Base * Multiplier” to accommodate some 3rd party factors (so now you should use 1.5 instead of 0.5).

Besides enhancements, the updated Exchange 2010 Mailbox Role Calculator also contains some bug fixes which are described in the changeblog. You can download the updated calculator here. Usage instructions can be found here.

Regarding the Exchange 2007 Mailbox Role Calculator, it has been updated to version 17.5 (was 17.3). It contains some minor fixes. The Exchange 2007 Mailbox Role Calculator can be found here (changeblog, instructions).