Need some advice/help creating fusion drive in Mac Mini (mid 2011) running Yosemite 10.10.4

Discussion in 'Mac mini' started by _logroll_, Jul 28, 2015.

  1. _logroll_ macrumors newbie

    Jul 28, 2015
    Hi all.
    The stock drive on my mid 2011 mac mini, model 5,2, recently became a brick.
    So, I got the idea I would create a fusion drive using a 120gb SSD and 1tb HDD.
    The first SSD that OWC sent me wasn't recognized in either internal bays or in an external enclosure, which was frustrating. Luckily, the kind folks at OWC agreed to send me a new SSD. While I waited for it to arrive I reinstalled a time machine backup of Yosemite (10.10.4) to the 1tb HDD just so I could have a working computer. Today I installed the replacement SSD drive and thankfully it is recognized and available in disk utility.
    So, the problem I am having now is that when I start the machine in (command+R) recovery mode (or from a bootable Yosemite usb stick) and launch disk utility the SSD and HDD are listed in black as separate drives. I had been expecting/hoping for the disk utility to list the two drives in RED, meaning the two separate drives are seen as a broken fusion drive which disk utility would then provide the option to 'fix'. This is according to all of the instructions I have read about creating a fusion drive and I am not savvy enough to know what else to do at this point.
    Fwiw, both SSD and HDD are GUID partitioned.
    -Do i need to erase all info from HDD before attempting "fusion creation"?

    -What am I missing/doing wrong?

    -How can I turn these two drives into a fusion drive?

    -Is a Fusion drive necessary?
    Should I instead just run two different drives? Plop bare bones Yosemite on the SSD and use migrate assistant to (re)load my digital detritus to the HDD?

    My goal is simply to have a fast stable machine that is as idiot proof as possible. If I had the money I would buy one large SSD, but I don't, even this was a unfortunate wallet stretching.

    ~Thank you for your help, please let me know if more info is required~


  2. Fishrrman macrumors G5


    Feb 20, 2009
    The SSD will run -faster- if you "let it be" as a "standalone" SSD.

    Put your OS, apps, accounts, and most-frequently-accessed data on the SSD.

    Put other stuff -- such as large libraries of music, pictures, and videos on the HDD. This keeps the SSD "lean, mean, and fast".

    It's not difficult to manage having two drive icons on your desktop instead of one, once you know where things are supposed to go. In time, you may prefer to do it this way.

    Personal experience:
    Right now, I keep no less than SEVEN volumes mounted on my desktop at all times, sometimes nine or more. I know where things go and have no problems with that.

    A fusion drive (while good enough) isn't absolutely "necessary" -- it's just a convenience designed by Apple for folks who have problems keeping things organized on -one- drive, without having to deal with two or more of them.

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