Messages in this thread | | | Date | Wed, 23 Aug 2006 10:55:37 -0700 | From | Marc Perkel <> | Subject | Re: Hardware vs. Software Raid Speed |
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Tejun Heo wrote: > Andre Tomt wrote: >> Marc Perkel wrote: >>> Running Linux on an AMD AM2 nVidia chip ser that supports Raid 0 >>> striping on the motherboard. Just wondering if hardware raid (SATA2) > > SATA2 has nothing to do with hardware RAID. > >>> is going to be faster that software raid and why? >> >> Beeing a consumer type board (AM2), the "raid on the motherboard" is >> in 99.999% of the cases just software raid implemented in their >> Windows drivers, a bootup setup screen plus some BIOS magic to get >> the OS booting. > > And, yeah, they're all software RAID. Also, there isn't much to be > gained from making RAID0/1 hardware. The software overhead isn't that > big. For RAID5, having XOR done in hardware helps. >
Thanks - I suspected that Raid 0 didn't gain anything in hardware unless they provided additional buffering or something but I just thought I'd ask in case there was something I was overlooking. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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