5 Replies Latest reply: Jan 13, 2013 11:09 AM by Shootist007
BillPTN Level 1 Level 1 (0 points)

I have a new iMac w/ Fusion drive on order. Does anyone know how the Fusion Drive interacts with files stored on external drives? I have iTunes on an external drive and plan to keep it that way. Will the system try to migrate frequently used files off my external drive on onto the Fusion drive?

 

Also, is there a way to "pin" apps to the Fusion drive regargless of how often they are used? Thanks.


iMac, OS X Mountain Lion (10.8.2)
  • 1. Re: Fusion drive and external drives
    rkaufmann87 Level 8 Level 8 (42,145 points)

    Your system will access the external HD (EHD) the same as any  other Mac. The addition of a Fusion drive will have no bearing on the connection or performance of the EHD.

  • 2. Re: Fusion drive and external drives
    BillPTN Level 1 Level 1 (0 points)

    OK, good. Since they said it tries to migrate frequently used files to the SSD I wasn't 100% sure it wouldn't try to move the iTunes files. Thanks for the info.

     

    How about pinning an app to the SSD so it can't be moved, do you know about that? Thanks again.

  • 3. Re: Fusion drive and external drives
    rkaufmann87 Level 8 Level 8 (42,145 points)

    Nope sorry I don't know about that.

  • 4. Re: Fusion drive and external drives
    Linc Davis Level 10 Level 10 (118,340 points)

    How about pinning an app to the SSD so it can't be moved

     

    You have no direct control over how data is allocated to the physical volumes.

  • 5. Re: Fusion drive and external drives
    Shootist007 Level 6 Level 6 (16,640 points)

    That is done between the 2 drives that are setup in the Fusion drive Storage Volume. It is not done with any other drives that may be connected externally or even internally.

     

    As Linc stated it is all done through some type of software included in Mt Lion for the Fusion drive storage Volume and can not be changed by the user. The Fusion drive system determines what files are on what drive.

     

    Just keep opening that program every hour or day and the fusion system will think you want and need it on the SSD.

     

    There is more then one way to skin a cat.

    BillPTN wrote:

     

    OK, good. Since they said it tries to migrate frequently used files to the SSD I wasn't 100% sure it wouldn't try to move the iTunes files. Thanks for the info.

     

    How about pinning an app to the SSD so it can't be moved, do you know about that? Thanks again.