Magic SANs

February 7, 2007 at 10:31 am | Posted in Architecture, Documentum and Oracle, Performance | Leave a comment

There is an excellent piece here about some of the choices to be made in configuring SANs for your application. The key point is that if your application, or part of it, has performance that is constrained by disk I/O then you should care about how that magic box of tricks is configured. This consideration implies that you should know something about the level of disk I/O your application requires!

In a similar vein I recall reading a presentation (possibly by Anjo Kolk) about the typical Docbase Admin/DBA conversation with the SAN administrator, something like:

DBAdmin: We need to setup a new docbase and database
SAN admin: Ok how much space do you need?
DBAdmin: 50Gb for the database, 1TB for the docbase
SAN admin: OK you can access the space here …

Not a mention of how many I/Os per second the application will require. Don’t be afraid to ask these questions.

By the way SAME stands for Stripe and Mirror Everywhere, an Oracle approach to fully utilising disk resources. See this document, many of the disk performance details are not specific to Oracle.

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