Re: Why are company's not certifying Debian? - raid

From: Alvin Oga (aoga_at_ns.Linux-Consulting.com)
Date: 10/30/04

  • Next message: Andrea Vettorello: "Re: Audio Problem" 
    Date: Sat, 30 Oct 2004 00:37:10 -0700 (PDT)
To: Ron Johnson <ron.l.johnson@cox.net>

    On Sat, 30 Oct 2004, Ron Johnson wrote:

    > There are many situations where "machine should stay down, until
    > the new replacement disk is sync'd ... and that can be a whole day"
    > is totally, absolutely unacceptable.

    yup
     
    > Perfect example: a box handling Customer Service Representatives
    > in a "bricks and mortar" environment. You walk into the electric
    > company during lunch hour to pay your bill, only to see a long
    > line because "the computer is down", syncing 200GB disks.
    >
    > That's where h/w RAID & SCA come in.

    or have a 2nd whole system ... just change the ip# from backup
    to primary and you're up and running in few minutes/seconds

    sometimes raid might not be able to resync fast enuff if the disk
    is constantly be written ... i got tired of waiting for raids
    to resync .. and keep running in degraded mode .. hoping and praying
    the 2nd disk doesnt die before it resync'd and the data double
    checked against the backup

    -- now its a lot cheaper to have 2 or 3 whole systems instead
       of depending on "raid"
            - disks is NOT the only thing to fail

    - wiggled ethernet plugs is more common than disk failures ...

    -- guess all this is based on what one thinks is important for
       protecting against which failures .. and why ..
            or what the boss with the "pen on the check" decides is important

    c ya
    alvin 

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