Microsoft (thank you Ross and Matt!) have released a much needed update to the Exchange 2010 Mailbox Requirements Calculator.
This version includes the following improvements and new features:
- Added processor core guidance for Hub Transport and Client Access server roles.
- Added the ability to define a custom number of databases that you would like to implement in the solution.
- Added support for 2-node site resilient Database Availability Groups.
- Added 1 and 6 processor cores as selectable options.
- Improved breakdown of the activation scenarios in a site resilient solution.
- Improved breakout of the role requirements section.
- The Storage Design tab now indicates that when you select a custom RAID configuration that the calculator ignores RAID-5 and RAID-6 for 5.xK and 7.2K spindles due to performance concerns.
- Updated processor utilization results to show the processor utilization even if it is above the recommended threshold.
- Made conditional formatting improvements throughout the calculator to warn you when you have a configuration that will not work.
- Improved various cell comments.
This version also corrects the following bugs:
- Fixed LUN Requirements tables to accurately reflect space requirements when database copies are deployed as each server may not host all database copies.
- Fixed conditions that resulted in -1 lagged copies.
- Improved the active database copies after first/second server failure calculations:
- We now calculate and expose the worst case scenario (the server that has to host the most active databases) is used in sizing memory and CPU.
- We now ensure that the secondary datacenter calculations only consider double server failures when there are 3+ HA copies located in the secondary datacenter.
- Removed maximum memory stipulation in the minimum ESE cache memory calculation.
For more information on this new update: http://msexchangeteam.com/archive/2009/11/09/453117.aspx
You can download the update from: http://msexchangeteam.com/files/12/attachments/entry453145.aspx