Clustering and DB Replication in virtualized (and cloud) environments

Posted by devdude on Stack Overflow See other posts from Stack Overflow or by devdude
Published on 2010-04-02T04:00:10Z Indexed on 2010/04/02 4:03 UTC
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Filed under:

clustering

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virtualization

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Cloud

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replication

Both replication and clustering are terms for servers setups with physical (real) servers, usually implemented on a DB or AS level.

Now the question: In a virtualized environment with "easy" scalable servers (touching clustering) and a higher availability (DB replication) through the means of high availability of the virtual server by the cloudserver provider, do we really need replication and clustering (as in covering the problems of traditional servers) ? Question is asked from a soultion/application provider viewpoint.

Please exclude the need of replication with a business requirement background, eg. the need to replicate a DB at 2 different geographical locations to ensure performance and data.

Thanks for your insights !

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