Re: SATA: RAID 5 controller recommendations

From: Steven Hartland (killing_at_multiplay.co.uk)
Date: 10/19/05

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    To: Tulio Guimarăes da Silva <tuliogs@pgt.mpt.gov.br>, <freebsd-performance@freebsd.org>
Date: Wed, 19 Oct 2005 16:17:20 +0100

    No problem I was initially very impressed with this card, great throughput
    ( after tweaking ), easy install and cheap; but then this problem hit.

    It gets a DMA timeout on one of the disks which it then drops from the
    RAID5 unfortunately it then gets the same error on another disk and does
    the same at which point I obviously get a kernel panic.

    At first I thought it was a one off but now I have 100% reproducible
    scenario using rsync which will cause the driver to ditch the array. Tried all
    the usuals disk's replaced, cables replaced even controller replaced, as
    we had 2, but no joy :(

        Steve
    ----- Original Message -----
    From: "Tulio Guimarăes da Silva" <tuliogs@pgt.mpt.gov.br>

      Wow! Nice to know, then. The only machine that uses a reasonable (not
    even high) amount of small writes is under RAID 1+0 (or 0+1, don´t
    remember). The other are mainly backup and department storage.
      I´m now warned. :P Thanks and sorry,

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