We are into consulting in Oracle application. Our main focus is into factory migration. We get client database averaging into 60G. We have SUN, HP and NT flavours. At any given point of time, 30 DBs are running.
Migration involves lots of IO as well as disk storage.
Hence we are unable to decide whether to go for NAS or SAN.
The issue you have in going to NAS for databases (especially with that many databases running), is that you may not be able to get the transaction performance you need compared to DAS or SAN solutions. You need to understand what the performance requirements are. I suspect that they are very high and you will want to stay with SAN.
There are some significant performance enhancements being made with NAS that may change that decision in the near future. Keep your eyes open for the DAFS announcement that is coming and the performance numbers. This may change the decision in the future.
As with any performance question, you need to know your requirements and the capabilities of the technologies.
Evaluator Group, Inc.
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This was first published in March 2002