Tuning Your RAID Controller for Maximum Storage Performance

“Tuning RAID controllers is not as difficult as some vendors
would have you believe; there’s no need for professional services
to get the job done.

“Many of the parameters reside around the cache and cache usage,
along with the obvious tunable parameters for the RAID LUNs. This
article isn’t about tuning specific RAID controllers; for that, you
will need to spend some time reading the documentation, but
hopefully by reading this you will be able to consider the
parameters in context with the I/O of the whole system. Each vendor
has its own nomenclature for variable names and what they mean. As
there is no standard set of definitions, I have chosen my own,
which you should be able to apply to a specific vendor. The areas
that need to be considered are: LUN creation and RAID level, and
cache tuning and configuration.”

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