If you have a Pegasus32 series (R4/R6/R8), or are thinking of buying a Pegasus32 and would like to use it with your new Mac Pro (2019) for additional storage. This guide will allow you to use the Pegasus32 as a stand alone storage or to use (as we will demonstrate with an Pegasus R4) in conjuction with the Pegasus R4i for even greater read and write speeds, than a stand alone Pegasus R4i.
How to setup and install the Pegasus32 R4 to a Mac Pro (2019):
Mac Pro, Pegasus32 R*, and Thunderbolt 3 cable
Will require an "active" Thunderbolt 3 cable
The next step is to install the thunderbolt 3 into one of the thunderbolt cable ports on the back of the Mac Pro, and one to the Pegasus32.
Connecting the cables should look as so
Go ahead plug in the power and video to your Mac Pro and Pegasus.
Once in macOS, you will need to install the driver for your Pegasus R32.
Click on the link below to find the driver and utility for your Pegasus.
Once the driver is installed. Reboot your Mac Pro and the Pegasus will automatically power if connected via Thunderbolt 3 cable.
You will need to open Disk Utility then go to --> File --> RAID assistance.
Create a stripe with both the R4i logical volume and the Pegasus32 R4.
Once the RAID stripe is created we benchmarked.
Test Software: Blackmagic Design, Disk Speed Test 3.2
Test Hardware: Mac Pro 2019 8 core Xeon, 32gb ECC DIMMs, 580x Module, Pegasus J2i 1 x 8TB 7200rpm
The performance numbers should be similar to what is exhibited below.