APFS available for Fusion Drives?

Discussion in 'macOS Mojave (10.14)' started by CNebs, Jun 4, 2018.

  1. CNebs macrumors member

    Feb 23, 2018
    Northern VA
    With APFS being removed from Fusion drives, and Craig stating again recently APFS will be rolled out to Fusion drives, anyone know if it’s in Mojave?
  2. NazgulRR macrumors 6502

    Oct 4, 2010
    Should be - it was on that usual slide with all the new features they didn't have time to speak about.
  3. DerfBWH macrumors 6502

    Aug 11, 2008
    Looks like it, yup! Notice "Apple File System for Fusion drives" in this year's "word cloud."

    Attached Files:

  4. CNebs thread starter macrumors member

    Feb 23, 2018
    Northern VA
    I missed the keynote this year, but was wondering if anyone who has grabbed the beta knows. We thought with High Sierra we were getting it, and then last minute here’s step to downgrade your APFS Fusion drive before deploying the GM.
    --- Post Merged, Jun 4, 2018 ---
  5. pythagorasuk macrumors member

    Jan 3, 2010
  6. ocrane macrumors member


    Jul 10, 2007
    What machine are you trying to install on?
  7. pythagorasuk macrumors member

    Jan 3, 2010
    late 2012 iMac still running high sierra beta with apfs
  8. chrfr macrumors 604

    Jul 11, 2009
    You'll need to get off that ancient beta to move to 10.14.
  9. gsmornot macrumors 68030


    Sep 29, 2014
    Yes, its in the beta. I wanted my Fusion drive updated to APFS and good thing because it did it without asking. Time Machine is still HFS+ but that's fine.
  10. atlatnesiti macrumors 6502a

    Sep 4, 2008
    Sydney, Australia
    Late 2017 iMac 5K i7 with 1TB Fusion drive was converted to APFS during install process.
    No regrets so far...
  11. sumo.do macrumors regular


    Mar 12, 2014
    So it appears to be the case now that you cannot (officially) run APFS on a Fusion Drive on a 'non-Mojave compliant Mac'. I have a 2011 Mac mini server stuck in High Sierra because it misses the cut on being Mojave compliant. This Mac mini runs a 256GB Samsung 840 Pro SSD and a 2TB Seagate Barracuda HDD (both 2.5" internals). I appear to have three realistic choices:

    1. Run the drives unfused with SSD formatted as APFS and HDD formatted as HFS+ (Apple's default setup given it is a pre-fusion drive Mac).
    2. Run the drives unfused with SSD and HDD formatted as HFS+.
    3. Run the drives as Fusion Drive in HFS+ (current setup).

    I am not so worried about the change as I rebuild often. So I am not so concerned about the easiest approach. I am just wondering if there is any benefit at all from running the SSD stand alone in APFS unfused given the Mac mini will live out it years stuck in High Sierra.

  12. pythagorasuk macrumors member

    Jan 3, 2010
    I took your advice and I’m now happily running Mojave’s beta 10.14.1 .
  13. minik macrumors 65816

    Jun 25, 2007
    Bellevue, WA
    I upgraded my Late 2015 Fusion Drive iMac to Mojave and it automatically converted to APFS. Even with FileVault turned on, I do 'feel' some improvement over HFS+ in terms of speed.

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