Firewire 800 speeds between Hard drives

Discussion in 'Mac Pro' started by The-Pro, Oct 16, 2012.

  1. The-Pro macrumors 65816

    Joined:
    Dec 2, 2010
    Location:
    Germany
    #1
    Good Evening,

    I am currently copying roughly 1TB of movies from one external FW 800 drive to another external FW800 drive. When I copy the files to an internal drive speeds are 80-84MB/s. The maximum since firewire is only transferring one way.
    However when copying from one external to the other speeds are 38-43MB/s. Each drive is connected to a separate FW 800 port on the Mac Pro. Given that the Mac Pro has 4 FW 800 ports why does the system have to split the bandwidth in half?
    I thought that the point in having separate ports is that you get full bandwidth in either direction at the same time?!
     
  2. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #2
    You only have 1 FW controller (bus). 4 ports - 1 chip. Super sad, I know. It's a sad sad hub.
    I got a simple 1x lane eSATA card and vary my case electronics between SATA, USB 2, and FW400/800.
     
  3. The-Pro thread starter macrumors 65816

    Joined:
    Dec 2, 2010
    Location:
    Germany
    #3
    Ahhh ok, I was guessing it must be something in that direction. It really is a sad hub, so much space and they only put one in. What a shame. Taking 6-7 hours to move the 980GB :( should be around 3
    I was considering that bud I hardly use externals so its not worth it.
     

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