We didn’t have time to fully test the Pegasus2 with the new Mac Pro. Blackmagic Disk tests showed 1145 MBps write speeds vs 756 MBps for the first Pegasus and 695 read speeds, a 24 percent faster than the original Pegasus drive. AJA read tests came in at 957 MBps, 45 percent faster than the 659 MBps that the first Pegasus posted. With striped hard drives, the AJA 4K read test showed the Pegasus2 at 1142 MBps, 41 percent faster than the original Pegasus in RAID 0 mode. We then reformatted the six 2TB Toshiba DT01ACA200 drives into a faster RAID 0 configuration and we ran the tests again. Our 6GB large file transfer tests results were throttled by the internal drive in the MacBook Pro, with write tests topping out at 775MBps. Blackmagic’s read result for the Pegasus2 was 698, 19 percent faster than the result posted by the first Pegasus. The Pegasus2 was 31 percent faster than the Pegasus in the AJA Write test and 21 percent faster in the AJA Read test.īlack Magic Disk Test Write results were similar to the AJA results, with the Pegasus2 moving data at a rate of 851 MBps, 25 percent faster than the Pegasus’s 680 MBps result. We moved the drives into a first-generation Pegasus R6 with Thunderbolt and ran the same tests. The amount of data able to move through a Thunderbolt connection hasn’t increased, but the throughput of a single channel has been doubled.

Thunderbolt 2 is an update to the Thunderbolt specification and takes the original’s two 10 Gbps bi-directional channels and combines them into a single 20 Gbps bi-directional channel. Thunderbolt first appeared in the early 2011 MacBook Pro, but is now included on all shipping Macs. Thunderbolt combines PCI Express and DisplayPort into a single connection, allowing for a combination of up to six peripherals, like storage devices, and monitors, to be daisy-chained together.

Thunderbolt is an interconnect technology developed by Intel in cooperation with Apple. Our initial performance tests show that a single Pegasus2 R6 with 6 standard rotational hard drives can hit speeds higher than Thunderbolt can support, but does not fully saturate the 20 Gbps bandwidth of Thunderbolt 2. The Pegasus2 has a black aluminum case to better match the design of the just-released

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