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QUESTION POSED ON: 07 May 2004
How does using RAID affect the workload of a DBA?
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EXPERT RESPONSE
It depends on how RAID is configured. If it's RAID 5, for example, your
workload is likely to increase, as Oracle performance is often poor with
this setup. A properly-configured RAID (ideally RAID 10, or mirrored and
striped volumes) storage subsystem, however, should not materially increase
a DBA's workload once implemented. Most of the work involved in using RAID
lies in the planning, ideally done in conjunction with your system
administrator. Note also that Oracle10g provides a great new feature called
Automatic Storage Management (ASM), which takes over management of all of
the disk devices allocated to your database. In other words, you can now
hand Oracle a pool of disks and Oracle will handle the logical volume and
datafile management.
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