Hot Swap

Discussion in 'Mac Pro' started by macintouch, Dec 13, 2006.

  1. macintouch macrumors regular

    Joined:
    Nov 10, 2006
    Location:
    Chicago, IL
    #1
    Hello.

    Now, I know the mac pro is not out of the box compatible with hot swapping the drives.

    Is there any possible way you could modify it to allow hot swapping? This is not a necessary feature but would definitely be nice to be able to do. If not now...something in the future?

    I believe that the hardware is capable of it, but I don't really know much about this. I dont know whether it's more of a software/firmware/hardware issue?

    Thanks in advance!
     
  2. Hockeypuck macrumors regular

    Joined:
    Sep 29, 2006
    #2
    SATA drives should be hot swappable either way... as long as you aren't pulling the boot volume.
     
  3. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #3
    The internal Mac Pro SATA drives are NOT hot swappable due to motherboard silliness.

    It's a mac issue (PCs using this chipset have no problem), so presumably it's firmware or something like it.

    There's also an issue in XP of those extra 2 SATA ports not being detected. Obviously, again, Mac problem.

    There's no way of fixing this.
     
  4. product26 macrumors 6502a

    product26

    Joined:
    May 30, 2005
    #4
    so does this mean that you wouldnt be able to use an esata adapter like this?

    [​IMG]
     
  5. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #5
    You could use it, but you can't unplug the drives they're connected to. Remember the old external SCSI devices?

    Plug them in while the computer is off, and don't unplug them while the computer's on.

    By the way, you'd have trouble with that anyway--you need to plug it into the mobo using a 90 degree angled SATA plug.

    --edit: I should clarify: you need the 90 degree plug to use the extra 2 ports. The 4 main ports should work with that panel.
     
  6. madyaks macrumors member

    madyaks

    Joined:
    Dec 3, 2006
    #6
    Does that mean that if I have a Mac drive in bay 1, and a Win XP drive in bay 2, and two storage drives in 3 and 4 that XP will not see my storage drives?
     
  7. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #7
    No, all 4 of the 'standard' ports will be detected.

    However, there are 2 additional ports (for a total of 6) hidden under the "Front Fan Assembly" in the front of the case.

    Those 2 additional ports are not detected when the mac is running XP.

    So my 5th hard drive is not detected in XP. The other 4 work great.
     
  8. electronbee macrumors newbie

    Joined:
    Apr 12, 2005
    #8
    Do they HAVE to connect to the SATA controller?

    There are USB 2.0 to SATA adapters... then, you could hotswap no problem.
     
  9. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #9
    it'd be slow though
     
  10. techster85 macrumors regular

    Joined:
    Oct 17, 2006
    Location:
    Lubbock, TX
    #10
    yea, it wouldn't be worth the hotswappable-ness (okay so i just invented a new word...) to deal with the large cut in speed, i think it would actually be faster to just have the drive internal, and have to shut down the computer to pull the drives...
     
  11. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #11
    You sure did! The word is 'hotswappabilitaneosity'.

    Who needs college?
     
  12. electronbee macrumors newbie

    Joined:
    Apr 12, 2005
    #12
    There are also Firewire 800 to SATA/SATAII devices out there. One I saw had an onboard RAID controller and supported modes: 0,1,1+0. And, it was all hot swap. So, if one drive went bad, you could pop a new drive in, and initiate a back-up without any intervention from the Mac itself.

    Four drives at RAID 0 would be fast. Even at RAID 1+0 would be fast.
     
  13. techster85 macrumors regular

    Joined:
    Oct 17, 2006
    Location:
    Lubbock, TX
    #13
    haha so true...more than that...who needs grad school??
     
  14. moreover macrumors newbie

    Joined:
    Nov 12, 2006
    #14
    hotswap using DiskUtility: simply unmount and you're good

    I have used Disk Utility to unmount ext SATA drives that were not hot swappable. It's painless, fast and safe. Just keep the Disk Utility icon in the dock
     
  15. slughead macrumors 68030

    slughead

    Joined:
    Apr 28, 2004
    #15
    The mac pro has problems with this, according to the documentation.

    I use an external SATA controller on another mac for the same purpose. It works as you describe, as well.

    However, those controllers are different than the onboard in the mac pro.
     

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