The idea behind clustering is to have two or more servers working together to keep an application up and running....
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
The application is actually hosted in a "virtual server" -- with its own name, IP address and shared storage. The underlying structure is transparent to users -- all they see is the application as it would be hosted on a single server.
The one feature lacking today with Exchange Server clustering, as shipped in Windows Server 2003 and Exchange Server 2003, is the fact that at any given time the shared data -- the information store -- is not being replicated, and thus becomes a single point of failure.
You can gain that functionality by using third-party products like NSI's DoubleTake that replicates data on a byte level, and additionally provides support for failing over to remote locations. The next release of Microsoft Exchange is reported to include store replication as well.
Do you have comments on this Ask the Expert Q&A? Let us know.
Dig Deeper on Microsoft Exchange Server 2003
Related Q&A from Bharat Suneja
Find out how to troubleshoot problems scripting Exchange Server email disclaimers and signatures.continue reading
Learn how to bulk modify alternate recipients and other Active Directory objects in Exchange Server 2003.continue reading
Discover tools and methods to globally disable IMAP and POP in Microsoft Exchange Server 2003.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.