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    SubjectRe: DE and hot-swap disk caddies

    Hi Chuck,

    You have me laughing and I love it, your signature!

    What you are referring to is an bridge to a backplane, here is the voodoo
    electronics. If you check, I suspect that each drive is master mode, and
    the tailgate generates the ID; where as the interface is more or less
    SCA-SCSI. SCA is an interface w/ all the tristating buffers intergrated.


    Andre Hedrick
    LAD Storage Consulting Group

    On Wed, 27 Mar 2002, Chuck Campbell wrote:

    > On Wed, Mar 27, 2002 at 04:27:18PM -0800, Andre Hedrick wrote:
    > >
    > > It requires more than what the average joe OS can do on its own.
    > >
    > Not to be a nay-sayer, or even argue, I jsut wonder what the present
    > hot swappable IDE raid devices are doing?
    > Are these built with all the necessary electronics, or are they just
    > rolling the dice?
    > I realise the OS only knows about the scsi interface to these, but they
    > would appear to provide hot swappable IDE disks, albeit, using a scsi
    > communication to the controller.
    > -chuck
    > --
    > ACCEL Services, Inc.| Specialists in Gravity, Magnetics | 1(713)993-0671 ph.
    > 1900 West Loop S. | and Integrated Interpretation | 1(713)993-0608 fax
    > Suite 900 | |
    > Houston, TX, 77027 | Chuck Campbell |
    > | President & Senior Geoscientist |

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