Max number of hard drives in cMP?

Discussion in 'Mac Pro' started by MarkC426, Jan 7, 2017.

  1. MarkC426 macrumors 6502

    May 14, 2008
    I have looked through the user guide, but obviously this was printed back in 2010 when technology was different. But it says install up to 4 hdd and 2 superdrive.
    I currently have 2 hdd and 2 ssd in the bays.
    Can I put another ssd in the second optical bay, or alternatively off a sonnet card?
  2. carpsafari Suspended


    Sep 13, 2015
    the Netherlands
    You can mount 2 drives in the Optical Bay, 2 SSD's fit easy
    Plus 4x HDD in the bays
    +2 PCIe/flashblades or mSATA SSD or standard SSD's
  3. MarkC426 thread starter macrumors 6502

    May 14, 2008
  4. kohlson macrumors 68000

    Apr 23, 2010
    I've done the same - mounted 4 HDDs in the regular bays, left in an optical drive, and placed an SSD in the other SSD drive bay. SSDs are somewhat impervious to vibration - I just used duct tape to hold it in place.
  5. 666sheep macrumors 68040


    Dec 7, 2009
    Reasonable maximum would be 20.
    8x 2,5" in ODD bay connected to 8-port PCIe card in slot 2, 8x mSATA on 2 Quad mSATA cards (slots 3,4) and 4x 3,5/2,5" in regular HDD bays. 1st slot reserved for powerful GPU.
    cMP despite its age is still a quite capable box.
  6. ActionableMango macrumors G3


    Sep 21, 2010
    Yes, in fact you can put in a lot more drives than that.
  7. Draeconis macrumors 6502a

    May 6, 2008
    Except to get 8 HDDs connected from the ODD bay would require running the Mac Pro with the side off, or some modding.

    I'd say the comfortable max without modding would be 18;

    2x 3.5" HDDs in ODD bays.
    4x 3.5" HDDs in Bays 1-4
    3x Amfeltec Quad M.2 PCIe storage adapters with 4 AHCI SM951s/XP941s each.

    Possible, but not cheap.

    If the Mac Pro can boot without a GPU installed (never tried this) and it's just being used for file server duties, you could add a fourth Amfeltec card and make that max 22.
  8. TzunamiOSX, Jan 10, 2017
    Last edited: Jan 10, 2017

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