In order to assist customers in designing their storage layout for Exchange 2007, we have put together a calculator that focuses on driving the storage requirements (I/O performance and capacity) and what the optimal LUN layout should be based on a set of input factors.
The calculator uses all the recommendations outlined in the following articles, and thus we recommend you read them before utilizing the calculator:
- Planning Storage Configurations - http://technet.microsoft.com/en-us/library/bb124518.aspx
- Planning Memory Configurations - http://technet.microsoft.com/en-us/library/bb738124.aspx
- Understanding Exchange Server 2007 I/O improvements from 64 bit - http://msexchangeteam.com/archive/2006/09/08/428860.aspx
The calculator does not make any recommendations toward storage design (RAID parity, number of disks, etc) as the storage design is largely dependent on the type of storage array being utilized. For more information on some basic requirements around storage design, see the Storage Requirements Blog listed above.
The calculator is broken out into the following sections (worksheets):
- Storage Requirements
- LUN Requirements
- Backup Requirements
- Log Replication Requirements
Mailbox Server Role Storage Requirements Calculator is been updated to version 13.7. Here’re are new feautres:
- Fixed the print margins so that now each worksheet will print out on a single page.
- Updated several comments across several tables to ensure accuracy with the data being represented.
- Added the latest version link URL so that you can always check the site to see whether a new version is available.
- Improved the Log Replication Requirements results section. The new format should make it very clear as to whether the chosen network link is acceptable for log replication. If it is not, a suitable network link is recommended. Additionally, the appropriate Windows Server 2003 TCP/IP settings are listed for both geographically dispersed CCR and SCR.
- The Storage Requirements result section was updated and enhanced in preparation of a new feature most of you have been asking for...see below, don't want to spoil it...
And last, but not least... New Features
Projected Number of Mailboxes Growth: The first new feature that has been added is the ability for you to specify during the solution's lifecycle the projected growth in terms of number of mailboxes. This way you can now easily model the increase in capacity and performance requirements by dialing the projected growth.
Network Failure Tolerance: When deploying geographically dispersed CCR or SCR across a WAN link there is the possibility that the network link between the two locations will become unavailable. As a result, truncation on the source cannot occur. To ensure you have enough space to survive the network outage an additional parameter needs to be taken into account when sizing space for the Log LUN. Since the calculator already includes a backup failure tolerance parameter, this parameter will only supersede that parameter if it is larger.
Microsoft, Exchange Server, Exchange Server 2007, Mailbox, Storage, Calculator