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Thread: Is ATA 133 backwards compatible with ATA 100




  1. #11
    Join Date
    Feb 2002
    Posts
    72

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    Quote Originally Posted by brashquido


    Partitioning won't do it because the 137GB limit is the physical limit of what the controller on pre ATA-133 can address. You can only partition a drive if the controller can address it!
    Brash is correct, an ATA-100 will not ba able to see more than 137Gb
    no matter how large your physical disk or array.
    But a ATA133 controller is backwards comp. with all previous ATA drives
    If you really need 160Gb of storage now
    a}buy a pair of 80's (priced about the same, could be used in a raid, greater reliablity( aleast one should work))

    b}upgrade motherboard or buy a PCI ATA133 controller card, along with the drive.
    If your just looking towards future needs, STOP! serial-ATA is coming, prices on ATA133 drive will continue to drop.
    Buy about what you need for 3 years.

  2. #12

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    Quote Originally Posted by T-Shirt

    Brash is correct, an ATA-100 will not ba able to see more than 137Gb
    no matter how large your physical disk or array.
    But a ATA133 controller is backwards comp. with all previous ATA drives
    If you really need 160Gb of storage now
    a}buy a pair of 80's (priced about the same, could be used in a raid, greater reliablity( aleast one should work))

    b}upgrade motherboard or buy a PCI ATA133 controller card, along with the drive.
    If your just looking towards future needs, STOP! serial-ATA is coming, prices on ATA133 drive will continue to drop.
    Buy about what you need for 3 years.
    Thanks for your reply T-Shirt,

    I'm actually looking to setup a 480GB volume using an IDE Hardware RAID 5 controller card and 4 X Maxtor 160GB HDD's. Currently there seems to only be ATA-100 RAID 5 cards, so I might just hang back for a bit until the whole ATA-133, ATA-100 compatability thing becomes a bit clearer.

    What are the advantages of serial ATA, and when is it expected to hit the market?

  3. #13

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    Quote Originally Posted by LunchBox
    Is ATA 133 backwards compatible with ATA 100?
    I just received e-mails back from Maxtor and Promise.

    Maxtor say the address bus issue with ATA-133 being a 48-bit address bus, and ATA-100 having a 28-bit address bus will be overcome (with Windows 2000 anyway) with Service Pack 3.

    For people looking for an ATA-133 RAID 5 card, the response I received from Promise said they are planning to release one, but didn't specify a release date.

  4. #14
    Join Date
    Feb 2002
    Posts
    72

    Default

    The recently released Intel Accelerator Application v.2
    now support 48bit addressing, win 98SE and up are able to see
    beyond 137GB

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