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  • G-RAID Odd write speed through eSata

     Elliott Houston updated 9 years, 10 months ago 2 Members · 2 Posts
  • Thomas Morter-Laing

    December 22, 2011 at 10:51 am

    Cool, so got a 2-TB G-RAID (in RAID 0), connected to my iMac using Sonnet’s new Echo Express/34 Adapter and one of their eSata adapters into it. I ran Blackmagic’s speed test on the G-RAID through FW800 and Esata using the adapter on my iMac and got some odd results-
    FW 800-
    Disk Read Data Rate in MB/s – 61.7
    Disk Write Data Rate in MB/s – 74.3

    -Cool, so about as expected, and nice and fast for a desktop drive.

    Disk Read Data Rate in MB/s – 121.8 (yay! Super double fast!)
    Disk Write Data Rate in MB/s – 58.7 (yay! Super double…..whaaa? Slower?)

    OK so could this be some sort of driver thing? I understand the Sonnet adapter is reasonably new but surely there’s no reason for it to have slower write speeds? Pls help :S

    I didnt test this clinically so to speak, and the G-RAID does have data on it etc, but I tested it at more than once and the results seem pretty consistent….

    Tom Morter-Laing
    Certified Apple Product Proffessional, 2010

    Thanks if you can help 😀

    Equipment (not for ‘bragging’, but in case it’s relevant to future posts :D): Canon 7D, with Rode NTG2.
    iMac 27″ intel i7 3.4GHz, 12GB RAM, ATI HD 6970M [2GB GDDR5], G-Tech G-RAID 2TB (soon to be over eSata!). Elgato Turbo H264HD.

  • Elliott Houston

    February 7, 2012 at 3:57 am


    I am having the same issue. New G-Tech 2TB drive, sonnet thunderbolt PCI-E adapter, sonnet PCI-E esata card. Blackmagic’s disk test shows a write speed of 55Mb/sec and read of 101.3Mb/sec. I’m getting the same results with Aja Disk System test. Have you gained any insight??

    Elliott H.

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