Re: Booting HP-UX 11 server using O.S. on EMC disks

From: Alan Johnson (adjtech_at_ulster.net)
Date: 07/16/03

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    Date: Tue, 15 Jul 2003 20:41:26 -0400

    Rick Jones wrote:
    > gary burstow <garyburstow@hotmail.com> wrote:
    >
    >>The problem occurs when there is a power outage. As the power comes
    >>back on the EMC symmetrics and the 3 attached HP servers start
    >>simultaneously. The problem is the HP's ask for the boot disks
    >>before the EMC is ready to present them. This causes the HP's to
    >>wait and subsequently requires the power to be cycled for each HP to
    >>restart the boot process. In the time taken to do this the EMC is
    >>ready and the servers can boot.
    >>
    >>In itself this is not a problem when people are available to cycle
    >>the power switches on the servers. However when no one is arround
    >>its a pain! as someone has to physically visit the servers to power
    >>them off then on.
    >
    >
    >>Does anyone have any ideas how I can get round this problem?
    >
    >
    > Putting the storage on a UPS might be one solution. Then the storage
    > "never" has a power outtage (The old bit: Patient: Doctor! Doctor! It
    > hurts when I do this. Doctor: Then don't do that! comes to mind :)
    >
    > Finding storage that comes-up faster after a powerfail would be
    > another.
    >
    > Third would be to have the machines boot off of local discs.
    >
    > A fourth, definitely kludgy mechanism would be to stop at the firmware
    > prompt and configure the autoboot timeout to be Really Large (TM) such
    > that it is longer than the time it takes your EMC storage to come
    > online. This presumes of course that the autoboot timeout can be made
    > long enough. I've never changed it from the default 10 seconds
    > myself.
    >
    > rick jones
    >
    > how ironic - in the the previous 15ish years I've only seen people ask
    > how to make the HP systems boot faster, not slower :)
    >
    Gotta agree Rick, NEVER heard about someone complaining about HP's
    booting too fast! WHY are you booting off of "array" disks? thats what
    you have local internal disks for, a single or pair of 4GB disks are
    real cheap and by the time it starts up and goes through init and FC
    stuff the EMC's will be there.... ?? No UPS's...........??

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