Because... the "hardware" RAID in most entry-level controllers
(Promise, etc) is fake hardware RAID. It still uses the CPU, there is
just some magic going on inside the RAID BIOS so that dumb OS'es like
MSDOS and Win98 will be able to "see" the RAID volume as a single
drive and access it with Int 21 semantics.

So layering a dubious-quality closed-source pseudo-hardware RAID
driver on top of your Linux kernel is a bad idea when you can just
forget all about the pseudo-hardware RAID and let Linux do everything.



On 5/9/07, JM Ibanez <[EMAIL PROTECTED]> wrote:
"Ariz Jacinto" <[EMAIL PROTECTED]> writes:

> btw, make sure you've disabled the RAID BIOS on your controller
> (if there's any) while implementing a software raid.

Why would one want to disable hardware RAID and go for software RAID,
especially if it works on the Linux kernel you'll be using? Just
curious.
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