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RAID

Discussion in 'Electronic Design' started by John Larkin, Apr 21, 2007.

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  1. John  Larkin

    John Larkin Guest

    OK, all my project and backup DVDs are finished burning. It's time to
    pull the plug on this piece-o-crap Dell "precision workstation"
    piece-o-crap and shift everything onto the new HP ML350. If I type
    fast, maybe I can finish this post before another Maxtor piece-o-crap
    C: drive dies. The HP is actually a server box: eight hot-plug RAID
    drive slots on the front, redundant power supplies (2 line cords!),
    redundant fans, redundant BIOS, impressive wiring and cooling, huge
    steel case; weighs about 40 pounds. The mechanics and fit/finish are
    superb. We have personal support people, with direct phone numbers,
    who know what they're doing.

    I just bought a dozen of them, so everybody will be running the same
    iron. If any machine blows up, we can just pop out the drives, plug
    them into a spare machine from the storage cube down the hall, and be
    back up in a few minutes.

    The RAID thing is awesome. If I pull out one of my raid-ed C: drives
    and hot-plug a blank drive into that slot, it will automatically begin
    cloning my system while everything goes on as usual. 40 minutes later,
    I can pop that drive, put it in a baggie on a shelf, and have a
    bootable clone system for any time I may need it.

    John
     
  2. Mike Monett

    Mike Monett Guest

    John, are you running XP? If so, how do you take a drive from one box to
    another without running into problems? Doesn't XP keep track of serial
    numbers or something so it knows when you are running on different hardware
    than the installation system?

    Regards,

    Mike Monett
     
  3. Eeyore

    Eeyore Guest

    Corporate versions don't care.

    Graham
     
  4. Mike Monett

    Mike Monett Guest

    No drive or LAN card serial numbers then. That's great.

    Thanks,

    Mike Monett
     

  5. I hope that you get many years of reliable service out of them. :)


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  6. John Larkin

    John Larkin Guest

    I'm at home now, running on the just-fired-up HP. XP (and all the
    apps!) are a direct image of the ones I set up on my newish HP at
    work. The machines are hardware identical so nothing can tell it's
    been cloned. All I had to do was change a couple of IP addresses.

    I did buy a copy of XP for each machine, so Microsoft should be
    placated. But I'm actually running the same one on both machines now.
    If I have troubles with Windows updates - the only way anybody will
    ever notice - I have three choices:

    Install another copy of XP directly on top of my existing XP at home,
    just to change the ID number, a sort of no-op OS upgrade. That might
    work and leave all my files and apps intact,

    or

    Do the updates at work and just re-clone now and then,

    or

    Don't do any updates!


    I did the same thing when the c: drive crashed on my piece-o-crap Dell
    at home. I cloned the c: drive from work and plugged the copy into my
    identical home pc. That worked fine, Windows updates and all. It was
    just a pain to work around the ghastly drive mounting and cabling
    inside the piece-o-crap Dells.

    Oh, did I mention that the Dells were pieces-o-crap?

    John
     
  7. Not an expert, but I think you will find that e.g. the ethernet card
    MAC addresses are different, as are the hard drive serial numbers.

    I believe you did mention that :)
     
  8. John Larkin

    John Larkin Guest

    Somebody told me that Windows doesn't check this stuff any more. It
    was a nightmare when when they tried that; say, somebody plugged a
    network adapter into a slot on a laptop, or added some ram, and
    Windows quit working. I think they do check for multiple patch updates
    from the same os serial number... the "Windows Genuine Advantage"
    thing.

    With RAID, I can swap hard drives four times a day!
    No, seriously, they're not very good.

    John
     

  9. Er um, it most certainly is well aware of differences in the machines. For
    one, the MAC address of the network adapter is used by windos as part of the
    machines fingerprint. The CPU has a serial number too. It doesn't mean you
    will have trouble, it just means that M$ *can* tell you have more than one
    machine with the same product key in use. It also means that if you used
    windos that needs activation (WPA), you are a little closer to having to
    reactivate next time you change something about your hardware combination.
    Just so you know. :)
     
  10. Guest

    Are these Maxtor's made after Seagate bought the company? I've
    wondered if Maxtor was still junk post the buyout. [I just pay more
    and get Seagates. ;-)]

    I build my own PCs, so I wasn't familiar with that model. The HP clock
    rate is low, but perhaps the high end silicon makes up for it.

    RAID is certainly the way to go nowadays. If you don't mind a slight
    dip in I/O performace, the software raid works quite well.
     
  11. Nico Coesel

    Nico Coesel Guest

    The problem with hard drives is not the hard drives themselves, but
    the way they are transported and the temperature they have to work in.
     
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