ATA 66 HDD's

Discussion in 'Macintosh Computers' started by iGary, Mar 10, 2005.

  1. Guest

    iGary

    Joined:
    May 26, 2004
    Location:
    Randy's House
    #1
    I'm setting up a RAID in my G4 MDD and looked on OWC last night for ATA/66 drives and could not find any - is there reverse compatablility with ATA/100?

    If not where should I look for an ATA/66 drive (two, that is)?

    Thanks. :D
     
  2. Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    I believe that an ATA-100 drive will work in compatability mode on an ATA-66 controller, but you might want to check (especially max size that your controller supports).
     
  3. macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #3
    An ATA-66 and even an ATA-133 drive will work on an ATA-66 controller. The issue is what size drive? Some ATA-66 controllers are limited to the 120GB drives while otehrs use 48bit addressing and can handle any capacity drive currently made (with room for plenty of growth).

    I know the MDD FW800 model has 48bit addressing on both ATA contollers (It shipped with 180GB drives as one of the options.) I think the original MDD can also handle the larger drives on both controllers. Both MDD models have an ATA-66 as well as an ATA-100 controller for hard disks.

    If your ATA-66 controller turns out not to support the larger drives, you can move you two current internal drives to the ATA-66 ccontroller and use the ATA-100 controller for the larger drive.
     
  4. thread starter Guest

    iGary

    Joined:
    May 26, 2004
    Location:
    Randy's House
    #4
    Cool - thanks folks. OWC had some info on it, and I Googled the net, but the info was very sketchy...Thanks again.
     
  5. macrumors G3

    Joined:
    Jul 23, 2002
    Location:
    Sol III - Terra
    #5
    Welcome.

    I think searching the forums here might have revealed the same information. I know I've seen this question elsewhere but I don't remember where.
     

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