Keld Jørn Simonsen wrote:
On Tue, Jul 15, 2008 at 10:40:26PM +0400, Brad Campbell wrote:
Keld Jørn Simonsen wrote:
I would also welcome test with mobo HW RAID - Many mobo's today come
with some HW raid functionality, and many people would be in the
situation of whether to choose a HW or SW configuration.
Do you have some pointers for information on motherboards that come with
hardware raid? I'd be interested to have a look at them. I've certainly
seen plenty of "fakeraid" systems, but I've not yet come across hardware
raid on an MB.
It is possible that I am thinking of what you call fakeraid.
I like "firmware raid" better, but the bottom line here is that the raid
is still done in the system CPU. These often have little or no hardware
support, such as cache so that multiple drives can be written without
passing the data through the system bus more than once (and chancing
change while that happens).
Anyway this is what many users buy and look at employing.
And my understanding is that you can set up the mobo controller in the
bios, and then have it running with Linux, without further software.
Yes, although the reliability of firmware raid under device failure
conditions is dependent on the vendor, firmware level, etc, etc.
I would then like to see what the differences are, and I hope to
document that Linux raid is better... Anyway I am first and foremost
just curious, and if HW/fake raid is faster or better, the I would
gladly recommend it.
Don't confuse HW and firmware raid, they don't have the same failure
points and capabilities.
--
Bill Davidsen <davidsen@xxxxxxx>
"Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark
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