Slow Transfer of Seagate FW800 Drive

Discussion in 'Mac Accessories' started by mikelong622, Oct 15, 2009.

  1. mikelong622 macrumors 6502

    Joined:
    Sep 29, 2006
    Location:
    St. Paul, Minnesota
    #1
    I purchased a Seagate Free Agent Desk drive today with the Firewire 800 connections. I'm trying to do my initial Time Machine backup on it, but it is taking forever and I'm wondering if it is operating at a normal speed. Maybe someone who knows the math or knows a bit more about data transfer rates can help me out.

    I started at 9.5 gigs transferred.

    9.5gb - 10.5gb = 2min 29sec
    10.5gb - 11.5gb = 1min 51sec
    11.5gb - 12.5gb = 31sec (fastest I've seen it do)
    12.5gb - 13.5gb = a whopping 3min 28sec
    13.5gb - 14.5gb = 1min 25sec

    Average transfer speed of 1gb every 1.95 minutes

    Total time to transfer 5gb = 9min 46sec

    Is this normal? As you can plainly see I have way too much time on my hands if I'm able to sit and watch data transfer....
     
  2. Palleraa macrumors member

    Joined:
    Jul 8, 2009
    #2
    At around 8mb/sec it may seem slow. But doing a time machine backup is not a good way to test speed. I believe OS X putting the backup way down in the priority list, also remember it is accessing files that you might be using. Try just copying a file to the drive. It should be around 50-70 MB/sec I would think.
     
  3. mikelong622 thread starter macrumors 6502

    Joined:
    Sep 29, 2006
    Location:
    St. Paul, Minnesota
    #3
    I got 663MB transferred in 21 seconds. Isn't it like 8Mb to one MB? If that's the case it'd be 252Mb/s...nowhere near the 7-hundred-something I'm supposed to get with FW800. Perhaps my math is off though.
     
  4. computergek80 macrumors newbie

    Joined:
    Apr 29, 2008
    #4
  5. mikelong622 thread starter macrumors 6502

    Joined:
    Sep 29, 2006
    Location:
    St. Paul, Minnesota
    #5
    Judging by Google...my math was correct. Were you trying to prove a point? Trust me, I spent a good amount of time searching the internets. :rolleyes:
     
  6. computergek80 macrumors newbie

    Joined:
    Apr 29, 2008
    #6
    No, I was thinking of reasons for slow transfer speeds. Maybe the bus or the rpm of the HD? Could it be the cache?
    I'm no expert, and I'm also curious as to what the weason might be.
     
  7. mikelong622 thread starter macrumors 6502

    Joined:
    Sep 29, 2006
    Location:
    St. Paul, Minnesota
    #7
    I'm not sure the specs of the HD as far as cache goes. My Time Machine transfer is still in progress at this point. 70gb down. I suppose that's not too bad. 70gb per hour. Perhaps I was just expecting too much from the little guy.
     

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