Rules to choose hardware for OLTP systems (sql server)

Posted by Roman Pokrovskij on Server Fault See other posts from Server Fault or by Roman Pokrovskij
Published on 2010-11-20T18:55:23Z Indexed on 2011/02/22 23:27 UTC
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sql-server

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Hardware

Ok. We know database size, number of concurrent users, number of transactions per minute; should choose number of processors, RAID, RAM, mirroring and clustering.

There are no exact rule.. but may be there are no rules at all?

In my practice in every case I have "legacy" system, and after some inspections and interview I can form an opinion how hardware and design can be improved.

But every time when I meet "absolutely" new system (I guess there are no new systems, but sometimes are such tasks) I can't say anything trustful. So I'm interesting how people deal with such tasks? They map task on theirs experience or have some base formulas?

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