Hi all - I've spent the past week reading this whole thread and trying to grok everything. Thank you to all the helpful and knowledgeable folks here, especially
@joevt and company!
I think I have a fairly simple use case.. I'd like to upgrade my storage capability by connecting an OWC Thunderbay 4 or 6 to my 2010 5,1 dual-cpu 2.4Ghz 8-core.
Currently my PCIe layout is (if memory serves...):
[top slot] - Sonnet Tempo SSD Pro Plus (with 1TB Samsung 840EVO and a 1TB 850EVO)
[middle slot] - Sonnet Tempo E4i 4-port internal SATA2 controller
[middle slot] - ebay PCIe adapter with a 1TB Apple "ssubx" SSD (from a 2015 MacBook Pro)
[lowest slot] - stock 5770 graphics card
I've been running Linux on it for few years and it acts primarily as a file server and vm/container box. It's running Debian (Proxmox hypervisor).
I modded the machine years ago by removing the optical drive(s) and putting four 3.5" large capacity hard drives in there, and connecting them to the Tempo E4i. I also have four 3.5" drives in the normal bays (1-4). The OS is installed and boots from the Apple SSD ("ssubx"). And I have decently fast storage with the two 2.5" samsung SSDs sitting in the Tempo SSD Pro Plus. But the eight spinning drives with SATA2 interface are bumming me out... I have contemplated over the years of getting an internal SATA3 controller to at least upgrade 4 of the 8 drives... then thought about a USB 3.x external solution... But now I'm excited by the prospect of getting a fast Thunderbolt 3 external enclosure and putting all the large capacity 3.5" drives in there... Thinking of perhaps two Thunderbay 6 enclosures and putting all the drives in there...
Assumptions:
A. I can use a GC-Titan Ridge card and connect two Thunderbay 6 enclosures to it using Thunderbolt 3 and it will work with Linux even from a cold boot.
B. Using Thunderbolt 3 external enclosures for these 3.5" spinning drives will provide better speed and convenience than upgrading my existing SATA2 controller card to a SATA3 controller card (acknowledging that the drives in the native slots 1-4 will still just be SATA2).
C. If I use two Thunderbay 6 enclosures, I'll be able to have 12 big drives instead of my current 8. (I would get one enclosure now, and get the second in a few months once I'm happy with the setup... and money...)
D. The OWC Thunderbay 4 or 6 enclosures are my best bet for Thunderbolt 3 enclosures for spinning 3.5" drives as of December 2019.
E. Since I don't intend to use the GC-Titan Ridge card with a display nor any USB2.0 devices, I can safely ignore the internal USB2.0 wiring that's been discussed in this thread.
F. Since the Thunderbay enclosures I'm contemplating are powered, and I don't need to charge any devices over USB-C, I can safely ignore connecting extra internal power to the GC-Titan Ridge card.
G. The Apple SSD ("ssubx") in the PCIe slot will still be the fastest, bootable drive in my system.
H. If I ever retire the Mac Pro with another machine with TB3, I could easily just disconnect the external exclosures from the Mac Pro and plug them into the new machine.
Questions:
1. Are my assumptions, A through H above, correct?
2. If I get rid of the Sonnet Tempo SSD Pro Plus and move those two samsung SSDs over to the Thunderbay enclosure, will they be any faster than my current setup?
3. Are there other enclosures I should consider? My research didn't find any other TB3, multi-bay, fairly quiet, non-rack mount drive enclosures... (well, besides the pricey Areca ones on OWC's website)
Objective:
To optimize my Mac Pro as a hypervisor and file server with high disk capacity and fast I/O.
Plan:
1. Replace the Sonnet E4i controller with the GC-Titan Ridge card.
2. Buy Thunderbay enclosure(s) - I can have up to two because the GC-Titan Ridge has 2 usb-c ports (ignoring daisy-chaining and any associated instability...).
3. Move all 8 internal spinning drives to the enclosures.
4. Continue to boot and run the OS (linux) from the Apple SSD.
5. I should install High Sierra and upgrade it to Mojave at some point to ensure I'm on the latest firmware...
Thank you so much! Love the Mac Rumors community.. Been here since 2011.