Tuesday, April 12, 2011

RAID(Redundant Array of Independent Disks)

There are a lot of optimization in SQL Server performance on the Server level. We have to also consider the hardware level optimization possible. The biggest bottle neck in performance in any RDBMS is the I/O bottle neck. There is no standard solution to all the issues of bottle neck and the issues are customised for a particular database with the kind of data and the kind of operations are most frequent in the database. There are a lot of research going around in this area and solid state devices are playing an imporatant part in it. In this article I will focus on the RAID array. This article will be the preface to how and when to choose the specific kind of RAID array.

RAID is a technology that provides increased storage functions and reliability through redundancy. This is achieved by combining multiple disk drive components into a logical unit, where data is distributed across the drives in one of several ways called "RAID levels".

to be continued...

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