70/30 Mixed Workload Test (Sledgehammer)
Version and / or Patch Used: Iometer 2014
Heavy Workload Model
This test hammers a drive so hard we've dubbed it "Sledgehammer". Our 70/30 Mixed Workload test is designed to simulate a heavy-duty enthusiast/workstation steady-state environment. We feel that a mix of 70% read/30% write, full random 4K transfers best represents this type of user environment. Our test allows us to see the drive enter into and reach a steady state as the test progresses.
Phase one of the test preconditions the drive for 1 hour with 128K sequential writes. Phase two of the test runs a 70% read/30% write, full random 4K transfer workload on the drive for 1 hour. We log and chart (phase two) IOPS data at 5-second intervals for 1 hour (720 data points). 60 data points = 5 minutes.
What we like about this test is that it reflects reality. Everything lines up, as it should. Consumer drives don't outperform Enterprise-Class SSD's that were designed for enterprise workloads. Consumer drives based on old technology are not outperforming modern Performance-Class SSD's, etc.
The drives in our test pool, especially the 480GB SP550 are all over the place. It's almost impossible to read this chart because of the performance variability of the SP550, so I have listed the average IOPS for each drive. The SMI reference design shreds this test, delivering performance that is right up there with the best MLC-based consumer-class SSDs.
Looking at the SP550, the 240GB model and the 480GB model are closely matched. However, the 240GB SP550 has much less performance variability than the 480GB model making it the superior performer of the two.
PRICING: You can find the ADATA SP550 240GB SSD for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:
United States: The ADATA SP550 240GB SSD retails for $73 at Amazon.
United Kingdom: The ADATA SP550 240GB SSD retails for £81 at Amazon UK.
- Page 1 [Introduction, Drive Specifications, Pricing and Availability]
- Page 2 [Drive Details]
- Page 3 [Test System Setup and Properties]
- Page 4 [Synthetic Benchmarks - ATTO & Anvil Storage Utilities]
- Page 5 [Synthetic Benchmarks - CrystalDiskMark & AS SSD]
- Page 6 [Benchmarks (Trace Based OS Volume) - PCMark Vantage, PCMark 7 & PCMark 8]
- Page 7 [Benchmarks (Secondary Volume) - Max IOPS, Disk Response & Transfer Rates]
- Page 8 [Benchmarks (Secondary Volume) - PCMark 8 Extended]
- Page 9 [Benchmarks (Secondary Volume) - 70/30 Mixed Workload]
- Page 10 [Maxed-Out Performance (MOP)]
- Page 11 [Final Thoughts]
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