Hardware RAID Level & Performance

[Henrique de Moraes Holschuh]

On Thu, 17 Feb 2005, Norman Zhang wrote:
> Do you have some figures?

>From the top of my head, about 4MB/s write and 10-30MB/s reading on a 5-disc
RAID5 array.  If that's enough for your needs, go for it.  Linux software
RAID can do better than that (but it eats some CPU *and* it doesn't drive
the SAFTE enclosure, nor can it do global hot-spares...)

> >You will notice Intel itself stopped with this sillyness and their newer
> >zero-channel adapters feature 128MB of DDR333 RAM and a IOP-321 
> >processor...
> 
> Thanks. I'll look into that. I'm not sure if support is already added to 
> the 2.6.x kernel. Most of us run Cyrus on Linux/BSD, right?

*All* Intel hardware RAID adapters look the same to the OS, AFAIK. So yes,
it is supported by Linux 2.4 and 2.6, and very well supported at that.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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