Mac – How to connect an internal SATA drive to Mini-SAS

For changing the back plane you might look at the Pro Cable 1 with a review here.

There is also the DX 4 if you want to really stuff you Mac Pro with drives.

I don't have direct experience with a controller but was leaning toward a MAXPower RAID mini-SAS 6G-1e1i since it has both internal & external SAS ports. Note that this card will not boot the Mac Pro.

The real problem is that I would want both a RAID card and a Mercury Accelsior and the Mac Pro (2008) only has 1 free x16 PCI 2.0 slot and you would need 2.

There is also a rumor of a Mercury Accelsior with eSATA ports in the near future.

YES, it's definitely worth it. With my setup, sustained transfer speeds were roughly 75% better using SATA, vs. USB3.

I tested both configurations using ZoneBench as follows:

SSD: 120GB OWC Mercury Electra 6G

Mac: Late 2012 Mac Mini, 2.6Ghz core i7, model ID Macmini6,2, 16GB RAM

Hot-Swap unit: StarTech USB3-to-SATA dock, model SATDOCK22U3S ver2

  All speeds are in MB/sec (mega-bytes per second)

  Configuration A: SSD connected via Hot-swap USB 3 Dock
  Lowest / Avg / Highest R/W speeds:  95 / 150 / 185

  Configuration B: SSD installed in internal HDD bay in 2012 Mini (direct SATA):
  Lowest / Avg / Highest R/W speeds: 145 / 250/ 460

All tests were repeated 5 times at intervals of 1 hour, under normal system usage. (A few apps open & idle, CPU & system I/O load 99% idle.)

As one can see, in this configuration, taking the trouble to mount the SDD in the Mini's internal SATA bay is well worth the massive performance gains.