LaCie USB 3 drive

Discussion in 'iMac' started by vanman1, Jul 14, 2019.

  1. vanman1 macrumors newbie

    Joined:
    May 12, 2018
    Location:
    SF bay area
    #1
    I got this 4 Terribite LaCie drive says LRDOPS3 & sn# NL2A24HW on bottom. Came with a cord that says USB 10 SS. Plugged it into TB port on back of Imac Pro and it took 12 hours to copy a 1.01 Terrabite folder from a partition on the LaCie 2Big 8. When I got this mac I also got a the LaCie 2Big 8 2 sled drive box and I copied the same folder from a 2 Terribite Seagate drive in my old 4 sled Firm Teck SATA box hooked up to the USB input of the LaCie 2Big box via the esata to usc superspeed cable adapter in about 1 hour. What's wrong with this picture, if it's that slow why did it come with the SS USC type C cable and connectors??? I am surely doing something wrong or is it just this drive that slow???
     
  2. whosthis macrumors member

    Joined:
    Aug 21, 2008
    #2
    Transfer speeds also depend on what you're copying, i.e. many small files are much slower than few large files.

    I doubt that the new drive is the bottle neck here. If doing the calculation, it looks more or less like USB 2 speed. So it is probably due to how you hooked up the source drive.

    You can run BlackMagic to do a short speed test on both source and target drive to find the problem.
     
  3. vanman1 thread starter macrumors newbie

    Joined:
    May 12, 2018
    Location:
    SF bay area
    #3
    Tried 2 other connections, same result. It is labeled as a USB 3 on packaging, but preforms at a USB 2 rate, huge difference. Am going to wipe it and return both. First bad experience with a LaCie product ever and I've got many.
     
  4. whosthis macrumors member

    Joined:
    Aug 21, 2008
    #4
    Well, without any concrete product link or the willingness to run a simple benchmark on the drives, it will be very hard to help you here anyway. ;-)

    I somehow doubt that the product is broken at the moment.
     
  5. vanman1 thread starter macrumors newbie

    Joined:
    May 12, 2018
    Location:
    SF bay area
    #5
    "Tried 2 other connections, same result." I used a stopwatch on both tries and my math says 50 to 54 MB/sec if you want a number.
     
  6. whosthis macrumors member

    Joined:
    Aug 21, 2008
    #6
    You are doing tests with lots of unknowns. It is just not suitable to find the problem.

    BlackMagic is a free download, everyone uses it, and after a minute you see what the drive is up to. Do it. Really. On *both* devices.

    Also, you should tell us what speed you actually expect (and what kind of data you are transferring).

    I mean I don't care if you are disappointed and send it back, but I would make sure that you are working on the correct problem, or the next device will behave just the same. So far, it is just impossible to tell.
     

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5 July 14, 2019