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    SubjectRe: Adaptec Fast-Wide & IBM DHFS Drive
    On Fri, Sep 26, 1997 at 11:42:33PM -0400, Steven N. Hirsch wrote:
    > All,
    >
    > I picked up an OEM version of an IBM DFHS S4W drive (aka UltraStar XP);
    > built for Apple. It's a fast wide single-ended drive, 7200rpm., 4.1GB
    > capacity. A screamer, but it absolutely refuses to work if tagged
    > queueing is enabled in the driver.

    [snip]

    FWIW, a possible data point:

    430FX mobo, P120
    Adaptec 3940W (Twin wide)
    2.0.31-pre9

    Host: scsi1 Channel: 00 Id: 00 Lun: 00
    Vendor: IBMRISC Model: DFHSS2W Rev: 4242
    Type: Direct-Access ANSI SCSI revision: 02
    Host: scsi2 Channel: 00 Id: 00 Lun: 00
    Vendor: IBMRISC Model: DFHSS2W Rev: 4242
    Type: Direct-Access ANSI SCSI revision: 02

    This is the 2.1 gig variety of the drive you mention. Write caching
    is enabled on both of them. Other SCSI devices (Tape, CD-ROM, another
    disk) are on scsi0 -- so the DFHS drives are each on their own bus.

    They work 100% with tagged queuing enabled. I'm using them with md0
    in a raid0.

    Jeff

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