Macbook Pro Corsair Force 3 RAID 0 slow reads

Discussion in 'MacBook Pro' started by dlee96, Jun 23, 2011.

  1. dlee96, Jun 23, 2011
    Last edited: Jun 23, 2011

    dlee96 macrumors newbie

    Joined:
    Feb 4, 2009
    #1
    I recently popped in a pair of 120GB Corsair Force 3 drives (not the recalled version) and am experiencing unexpected behavior.

    What's odd is that write speeds are rather speedy at around 330MB/s and read speeds are slower at about 280MB/s using the AJA System Test application.

    I was expecting a bit more performance in general, but was surprised with the higher write speeds. Anyone with ideas as to why this may be?

    The hardware is a Macbook Pro 2.66 i7 with 8GB of RAM (SATA II) and MCE Optibay. The RAID array was set up as a striped array with a 128kb stripe size. A 32kb stripe size has similar results.
     
  2. dlee96, Jun 23, 2011
    Last edited: Jun 23, 2011

    dlee96 thread starter macrumors newbie

    Joined:
    Feb 4, 2009
    #2
    Turns out resetting the SMC and PRAM sets the read and write speeds to parity (330MB/s). Still not quite as fast as I had hoped, but fast enough!


     

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