setting up raid10 with more than 4 drives

From: "Rajesh Kumar Mallah" <mallah(dot)rajesh(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: setting up raid10 with more than 4 drives
Date: 2007-05-29 21:14:52
Message-ID: a97c77030705291414t115644ecr6f9a812c0e7c56bf@mail.gmail.com
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hi,

this is not really postgresql specific, but any help is appreciated.
i have read more spindles the better it is for IO performance.

suppose i have 8 drives , should a stripe (raid0) be created on
2 mirrors (raid1) of 4 drives each OR should a stripe on 4 mirrors
of 2 drives each be created ?

also does single channel or dual channel controllers makes lot
of difference in raid10 performance ?

regds
mallah.

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