Home made Fusion Drive question

Discussion in 'Mac mini' started by Robdogg3058, Aug 20, 2013.

  1. Robdogg3058 macrumors newbie

    Joined:
    Aug 1, 2013
    #1
    Hi

    I was in an Apple store last night and have to say I was really impressed with the i7 2.3 Mini. It will definitely be enough for Lightroom and the virtual machines I need to run. I was wondering if anyone knows which 128GB SSD drive Apple use if you buy the fusion option. The machine I saw only had the stock 5200rpm drive in and it was not that slow. It may become slower once I start using it more heavily.

    If I was to buy the SSD myself with a dual drive kit would I benefit much from getting a 256GB SSD instead of a 128GB SSD?

    Which SSD's would you suggest?

    I was also wondering if it is better to spend more on a fast SSD than upgrade to the 2,6Ghz model? I would be putting 16GB RAM in which ever model I get.

    Thanks
    Rob
     
  2. xlii macrumors 68000

    xlii

    Joined:
    Sep 19, 2006
    Location:
    Millis, Massachusetts
    #2
    Back in November 2012 I installed diy fusion drive in my 2.3 GHZ 2012 mini. It's been running fine ever since.

    If I were you, I would stick with the 2.3 and spend the savings over the 2.6 on the best ssd I could get. The stock drive in my was a 5400 1TB drive.

    In my opinion I would get the largest ssd I could afford. That said, I could only afford a 128 GB Samsung 830, but it has performed well and I am pleased with the machine these past 9 months or so.

    If you go the diy fusion route just read the instructions and make sure you have the correct tools to do the job. It is not all that hard but you do have to be careful not to break a connector.
     
  3. OneMike macrumors 601

    OneMike

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    Oct 19, 2005
    #3
  4. Robdogg3058 thread starter macrumors newbie

    Joined:
    Aug 1, 2013
    #4
    Thanks for the info. Does running your ssd as a fusion drive impact it's performance much? Would it be quicker if I kept them separate?
     
  5. Robdogg3058 thread starter macrumors newbie

    Joined:
    Aug 1, 2013
    #5
    If I was going to create the fusion drive by adding a SSD does it make much difference if I add a 128GB, a 256GB or a 512GB SSD to the existing 1TB 5200RPM drive?
     
  6. jwjsr macrumors 6502

    jwjsr

    Joined:
    Mar 15, 2012
    Location:
    Fairhope, Alabama
    #6
    I did diy samsung 840 250gb fusion and it was not worth the risk and uncertainty for $100 dollar savings.
    They say the bigger the sad the faster but probably not noticeable.
     
  7. gnasher729 macrumors P6

    gnasher729

    Joined:
    Nov 25, 2005
    #7
    It does impact speed a lot. In a very positive way.

    1. If you use a 128 GB SSD drive as part of a Fusion drive, then it will not contain maybe 100 GB of the files that you think are most important for speed, but it will contain 124 GB of the data that is actually most important for speed. For example, every time you launch iTunes, it will load all the album art. With a Fusion drive, just that album art goes on the SSD drive, not the music which may be untouched for ages. That's something that's impossible to do if you organise your data by hand.

    2. 4 GB of the SSD drive are used as a write cache. That means when you copy files, or download files, or change files, they are first written to the SSD drive at maximum speed. As far as the user is concerned, it is very fast. Then when the user doesn't do anything for a bit, Fusion drive copies the data where it actually belongs. It doesn't matter how long that takes, because you don't notice it and it doesn't slow anything down.

    ----------

    In cost, yes. In speed, quite unlikely.
     
  8. philipma1957 macrumors 603

    philipma1957

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    Howell, New Jersey
    #8

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  9. Robdogg3058 thread starter macrumors newbie

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    Aug 1, 2013
    #9
    I was thinking of getting either the Samsung 250GB 840 EVO or the 256GB 840 PRO. just wondering if its worth the extra £40 for the pro if its used as a fusion drive?
     
  10. jwjsr macrumors 6502

    jwjsr

    Joined:
    Mar 15, 2012
    Location:
    Fairhope, Alabama
    #10
    the threads here say the 840 pro writes faster and will outlive the non- pro but at the same time the non-pro should last at least ten years
     
  11. philipma1957 macrumors 603

    philipma1957

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    Apr 13, 2010
    Location:
    Howell, New Jersey
    #11

    only if you write a lot of data every day.


    this is true for almost everyone.

    you would be in trouble if you recorded eye tv 24/7 as uncompressed files.

    it would use 20 gb for 3 hours . so 160gb in 1 day would mean you would fully write over the drive in 1.5 days after 1000x or 1500 days it will most likely be dead. not many people would ever use an ssd like that.
     
  12. ioannis2005gr macrumors 6502

    ioannis2005gr

    Joined:
    Aug 10, 2013
    Location:
    Europe
    #12
    good choice but does it void the warranty in case it falis? or you are going to bring back the initial configuration before you return it for service...?
     
  13. OneMike macrumors 601

    OneMike

    Joined:
    Oct 19, 2005
    #13
    According to apple only the ram is user serviceable. So it would void warranty technically. You could always just put back to stick if you had an issue. Not sure what I'd do personally. Usually switch macs too fast. Think I will keep this one a while though.
     

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