Re: SATA: RAID 5 controller recommendations

From: Tulio Guimarães da Silva (tuliogs_at_pgt.mpt.gov.br)
Date: 10/19/05

  • Next message: Mike Tancsa: "Re: SATA: RAID 5 controller recommendations" 
    Date: Wed, 19 Oct 2005 13:02:44 -0200
To: freebsd-performance@freebsd.org

      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, donīt
    remember). The other are mainly backup and department storage.
      Iīm now warned. :P Thanks and sorry,

    Túlio G. da Silva

    Steven Hartland wrote:

    > Unfortunately the 1820A is the one I have and its major unstable under
    > high transaction RAID5 ( rsyncing a LARGE amount of small files ). I've
    > contacted highpoint but after an initial promising email that they have
    > forwarded the problem to engineering they are now refusing to respond
    > to email. Been that way for nearly a month now so time to send it back
    > and move to another manufacture.
    >
    > Steve / K
    > ----- Original Message ----- From: "Tulio Guimarães da Silva"
    > <tuliogs@pgt.mpt.gov.br>
    > To: <freebsd-performance@freebsd.org>
    > Sent: 19 October 2005 14:29
    > Subject: Re: SATA: RAID 5 controller recommendations
    >
    >
    > For price/benefit, I too recommend the HPTs, specially the 1820A. Itīs
    > not THE killer for speed, but itīs fairly stable, factory-supported on
    > FBSD, has good management utils (including remote, via daemon) and is
    > about half the price of its competitors. Besides, the "A" model has its
    > own XOR processor, what apparently frees some CPU usage (I canīt really
    > tell, since we use them on quite good machines and havenīt seen good
    > benchmarks comparing 1820 to 1820A).
    > In addition, itīs low-profile, fitting even 1U rack servers, and
    > provides its own brackets for low- and high-profile... *but* it has no
    > integrated memory, and no I2C options, if itīs an issue. Itīs the only
    > downside with them, in my opinion.
    > In the other hand, I would take a look at the Arecaīs, itīs not the
    > first time I hear good comments on these. Theyīre double the HPTs price,
    > but come with onboard ECC SDRAM and I2C features. Sounds good to me. ;)
    > Good luck. :)
    >
    > Túlio G. da Silva
    >
    > Peter Losher wrote:
    >
    >> On Tuesday 18 October 2005 03:36 pm, Steven Hartland wrote:
    >>
    >>
    >>> Anyone got any SATA RAID 5 controllers they can recommend
    >>> 64Bit PCIX.
    >>>
    >>>
    >>
    >> I personally would reccommend the HighPoint RocketRAID series (we use
    >> the
    >> 1820A here on a dual Opteron system running 5.4/amd64) We are using
    >> the
    >> HP-provided hpa.ko amd64 kernel module, but thanks to HighPoint and
    >> Scott
    >> Long, -CURRENT, 6.0 and 5-STABLE now have the amd64 driver integrated
    >> into /usr/src tree . (a previous i386 version of the driver has been
    >> there
    >> since 5.3)
    >>
    >> Best Wishes - Peter
    >>
    >>
    >
    >
    >
    > --------------------------------------------------------------------------------
    >
    >
    >
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    >
    >
    >
    >
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