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RAID-5 with 4 / 3 Hard Drives (SoftRAID, Thunderbolt v1)
Tests shown here uses the fastest portion of the drives in order to show the peak speeds possible with the Thunderbay; all hard drives slow down as they fill up, as per the simple physical fact of πD (track circumference).
The Thunderbay performed admirably, as did the Toshiba MG03ACA300 hard drives, which offer very impressive performance.
Tested with the Thunderbay IV (Thunderbolt, not Thunderbolt 2).
Results shown are real-world throughput through the file system API (not unachievable driver-level throughput).
Even with only three drives, throughput is excellent, with four drives raising speed to impressive levels.
RAID 5 X 4: 534 / 563 write/read MB/sec (four drives) RAID 5 X 3: 367 / 374 write/read MB/sec (three drives)