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Promise Pegasus J4 Thunderbolt: Performance with Hard Drives

Hard drives are not as fast as SSDs, but in a 4-way RAID-0 stripe they can deliver high sustained transfer speed.

A RAID-1 mirror is another possibility and has some read-speed benefits as the capacity is filled up.

Performance with 1/2/3/4 SSDs on incompressible data (and RAID-1 mirror).

Tested with diglloydTools DiskTester.

Hard drive performance in Pegasus J4, single drive, mirror, RAID-0 striping
(Data from diglloydTools DiskTester data graphed from fill-volume test)

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Dracast LED500 Plus Series Daylight LED Light
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