Updates to the Mailbox Server Role Storage Requirements Calculator (Version 16.3)

The MS Exchange Team has posted an update to the "Exchange 2007 Mailbox Server Role Storage Requirements Calculator " yesterday.

Enhancements in this version:

• We added the calculated (or user defined) read/write ratio per mailbox tier into the Storage Requirements Results User Mailbox Configuration table.
• We added the server's calculated database read I/O percentage value into the Storage Requirements Results Disk Space & Performance Requirements table.
• Since the Recovery Point Objective input question only dealt with SCR, we moved that from the Log Replication section to the Standby Continuous Replication Configuration table.
• We added a new message profile, Extra Heavy. With this additional profile, we now have 5 available messaging profiles as defined

Bug Fixes:
In prior versions, when you selected to use SCR and wanted to match the source configuration design, the following tables did not accurately reflect the correct values for the given SCR configuration (in so far as by selecting to match a source CCR configuration that means there are 2 SCR targets for every active database instance, so if you had 2 CCR clusters then you would have at least 2 SCR targets per CCR cluster):

1. Disk Space & Performance Requirements - Total for all SCR Servers column, all rows.

2. LUN Configuration (per Server) - SCR Targets column, Total Recommended Exchange LUNs row.

3. Storage Configuration - Environment column, Total Number of SCR Disks Requirement row and Total Number of Disks Required row.

Source:

http://msexchangeteam.com/archive/2007/07/05/445802.aspx