Exchange 2007 Upgrade Requires Careful Planning

Exchange 2007 is the latest release of Microsoft's popular enterprise messaging application and it includes many new advanced features for scalability, security, recovery, mobile access, and unified messaging support. Exchange 2007 is a full 64-bit application and requires a 64-bit Windows Server OS platform for deployment.

The upgrade to Exchange 2007 from Exchange 2003 is a "transition," not a migration, because of the requirement for 64-bit OS support. Once a new 64-bit server is deployed and Exchange 2007 is installed, existing mailboxes are moved from the Exchange 2003 server to the new Exchange 2007 server.

When planning the new 64-bit server, pay careful attention to the store size and performance requirements of your environment. The 64-bit OS can support vast amounts of physical memory, as compared with the 32-bit Windows. Depending on how much memory you provision, disk I/O will be reduced, potentially allowing less expensive disk drives.

Exchange 2007 supports a maximum of 50 database stores as well as large mailboxes (1-2GB). You may wish to reallocate your mailboxes to take advantage of the increased number of stores and up the mailbox quota limits of your "power" users.

To learn more about Exchange 2007, try the Exchange Web site or attend the annual TechEd event being held in Orlando, Fla., June 4-8.

... Bob Spurzem

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