Messages in this thread | | | Subject | Re: Linux SATA RAID FAQ | From | Alan Cox <> | Date | Mon, 16 Aug 2004 22:58:29 +0100 |
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On Llu, 2004-08-16 at 23:06, Andrew Morton wrote: > I'm sitting on the vendor's driver for these cards. How does your work > differ from this?
It uses the IDE layer instead of badly duplicating it in essence.
> hch questioned why we need the driver at all: just put the card in JBOD > mode and use s/w raid drivers. But the thing does have an on-board CPU and > the idea is that by offloading to that, the data transits the bus just a > single time. The developers are off doing some comparative benchmarking at > present.
On my set up raid1 is materially faster using their processor and raid0 is materially faster not. There are also co-existance issues with Windows dual boot setups. The PCI single copy makes a big difference on a 32bit/33Mhz plug in card.
Alan
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