Re: Alpha 4100 power supply

From: Mike Dorn (mrdorn_at_wavefront.com)
Date: 01/26/04

  • Next message: Javier Henderson: "Re: Alpha 4100 power supply" 
    Date: Mon, 26 Jan 2004 16:15:15 -0600

    Keith A. Lewis wrote:
    > Javier Henderson <javier@KJSL.COM> writes in article <86isiy1rte.fsf@skylane.kjsl.com> dated 26 Jan 2004 10:35:25 -0800:
    >
    >>I've laid my hands on an Alpha 4100. Very studly. But, it needs a
    >>power supply. This is purely for personal use, not for business.
    >
    >
    > FWIW, the Alphaserver 4100s I have used have 3 power supply bays but only
    > need 2 working power supplies to function. And they are hot-swappable, so
    > if you have 3 and 1 breaks, you can replace it without taking the system
    > down.
    >
    > So... if you have 0, you need 2. If you have 2, you're set.
    >
    > --Keith Lewis klewis {at} mitre.org
    > The above may not (yet) represent the opinions of my employer.
    A slight correction. Depending on your configuration, you may be able
    to get by with a single supply. The 4100 will hold up to 4 processors.
      I beleive you can run up to 2 CPUs on a single power supply; you need
    a second supply when you add a third processor. You can have an extra
    supply for power redundancy, but they are NOT hot-swappable. You need
    to shut down and open the box to replace a supply. There is also a
    special internal cable you need to add between the supplies when
    installing more than one of them.

    (Great box, though--very reliable.)

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