Fusion Drive with internal SSD and external RAID

Discussion in 'iMac' started by zappa999, Oct 22, 2015.

  1. zappa999 macrumors newbie

    zappa999

    Joined:
    Mar 20, 2012
    #1
    Hi,

    I have a 2014 iMac with built-in 512GB SSD and store most of my data on a WD My Book Thunderbolt RAID. The RAID is configured as stripe-set.

    As I don't like having to manage the two separate drives, I tried to create a fusion drive using the SSD and the RAID set.

    All works fine, so I can create the CoreStorage (diskutil cs create ...) and create a logical volume (diskutil cs createVolume) - but the system is never able to mount the new volume.
    It appears to be mounted and unmounted within a second after creation, but then there is no chance to mount and use it.

    I have seen threads where others created FusionDrives using similar setup but never exactly the same.
    Any thought?

    Thanks, Christian

    btw this is on 10.11
     
  2. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #2
    Fusion really dosnt like external drives never mind raid arrays. Would you not use a scrip to transfer certain folders?
     

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