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    SubjectRe: Linux SATA RAID FAQ
    On Sad, 2004-08-14 at 01:31, J. Ryan Earl wrote:
    > On the brightside, md raid5 is often faster than hardware raid5. At
    > least on the 7000 and 8000 series of 3ware hardware; the 9000 series
    > looks promising though. I haven't seen megaraid SATA numbers, and I
    > don't know what happened to the SX8.

    Be cautious what you measure. One of he problems until you reach PCI-X
    is PCI bandwidth. Thus software md5 can look good but the moment its
    combined with other PCI activity goes down the pan entirely.

    > When the libata Marvell drivers come out, you'll have a cheap upgrade
    > path for PCI-X boards if you want fast md raid:

    Agreed. PCI-X will change a lot of this for boxes that are not very
    cpu/memory limited.
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