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    SubjectRe: HighPoint RocketRaid 620 vs. RocketRaid 640 -- supported?
    On Wed, Sep 21, 2011 at 07:28:26AM -0400, Justin Piszcz wrote:
    > Hi,
    > Incase anyone is wondering the same thing, I contacted Highpoint and they
    > said (confirmed) the 620 support (which I am using now) is built-in to
    > the kernel and the 640 is not, so unless you like compiling kernel
    > modules/out of tree drivers for a _boot_ volume and want a regular SATA
    > 6.0gbps controller that supports TRIM, I'd go for the 620 even though it
    > maxes out around 390-420MiB/s read where a real SAS controller supports
    > 490-500MiB/s for an Intel 510 SSD, but remember, SAS controllers (at
    > least the one I tested with does not support TRIM and there is no Intel
    > SSD optimizer for Linux.

    Hmm.. does SAS "SCSI UNMAP" automatically get translated to
    ATA TRIM if you hook up SATA disk to SAS HBA ?

    Is the ATA<->SCSI translation being done by the HBA firmware,
    or is it handled in the driver?

    -- Pasi (who is too lazy to grep in the driver right now ;)

    > Justin.
    > On Mon, 19 Sep 2011, Justin Piszcz wrote:
    >> Hi,
    >> I have a HighPoint RocketRaid 620 and it works fine with 3.0+.
    >> The HighPoint RocketRaid 640 also has a Marvell 88SE9128, can anyne
    >> confirm whether this (x4) PCI-e 2.0 card works in Linux with the
    >> built-in kernel driver?
    >> Justin.
    > --
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