Standby servers are really useful in large environments. They are used to implement secondary sites for disaster recovery, and for testing purposes. For years, there was never a good solution for implementing a standby solution for Exchange clusters due to the complex nature of clustering. Now Microsoft releases and supports a solution for standby clustered Exchange 2003.
From reading the article it seems that there is no special service pack requirement though personally I would go fully patched and perhaps even wait for SP2 to try my first Exchange standby solution.
For more information:
http://www.microsoft.com/technet/prodtechnol/exchange/guides/DROpsGuide/2493c2d6-618c-4c49-9cb1-fff556926707.mspx
About Amit Zinman
Currently working as Project Manager and Systems Consultant, heading and consulting on Exchange and NT/Windows 2000 based migrations and deployments for large companies such as Checkpoint, Comverse, Smarteam, Nice, Aladdin and leading Israeli Banks, Also involved in writing scripts and custom solutions for clients based on ADSI, CDO and Visual Basic and teaching Windows 2000 and Exchange 2000 in MSCE colleges and lecturing in Microsoft User Groups.
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