Internal vs External SSDs

Discussion in 'iMac' started by tirexstorm, Nov 14, 2014.

  1. tirexstorm macrumors regular

    Joined:
    Oct 22, 2007
    #1
    I am planning on ordering a riMac and I am debating between ordering with a 512gb SSD and ordering with a 256gb SSD and then using an external 250gb SSD (USB 3.0) to inxrease the capacity. The latter will be a lot cheaper, but will there be any performance problems doing it that way?
     
  2. karel maenhout macrumors newbie

    Joined:
    Nov 14, 2014
    #2
    external ssd using USB3... don't

    I sadly found out that using an external ssd isn't the best way to go. I use a Lacie Porsche Slim ssd for my vmware images. The performance dropped considerably after some usage. The solution to restore the original performance was to do the following steps:
    - copy everything to another disk
    - get the ssd out of the enclosure
    - attach it using sata to a windows pc
    - format the ssd to ntfs
    - run disk optimiser on the ssd (=trim)
    - put it again in the enclosure
    - format it to an apple format
    - copy everything (vmware images) to the ssd again
    I dont even dare to think about the consequences of those steps to the lifetime of the ssd...

    A better solution (but much more expensive) would be a ssd in a thunderbolt enclosure... If you can find one that you can afford. "Trim can be enabled" using thunderbolt.
     
  3. koulmj macrumors 6502

    Joined:
    Mar 18, 2013
    #4
    I have a usb 2 ssd 250gb, boots to osx just fine. It is actually an internal drive hooked up to a usb adapter. Run great... Boots way faster than the spin ing internal imac drive. This is a 21.5inch model i bought last month.
     
  4. tillsbury macrumors 65816

    Joined:
    Dec 24, 2007
    #5
    It won't be much cheaper if you want the same performance. To get anything like what you will get internally you'll need a pair of SSDs in RAID on USB3 or Thunderbolt, which is going to be a lot more than just upgrading the SSD.
     
  5. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #6

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