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Toshiba OCZ TR200 SATA III SSD Review (Page 8)

By Jon Coulter from Oct 11, 2017 @ 5:00 CDT
TweakTown Rating: 85%Manufacturer: Toshiba

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 at QD32. Phase two of the test runs a 70% read/30% write at QD32, 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.

toshiba-ocz-tr200-sata-iii-ssd-review_68

What we like about this test is that it reflects reality. Everything lines up, as it should. Consumer drives don't outperform Enterprise-Class SSDs that were designed for enterprise workloads. Consumer drives based on old technology are not outperforming modern Performance-Class SSDs, etc.

Because of the massive variability inherent to the drives we selected for our test pool, this chart is very hard to read, so just look at the average IOPS listed. The 240GB model gets pounded because it is able to be written over at least twice in the preconditioning stage. The higher capacity models are likely not getting written over more than once in the 1-hour timespan which is why they do so much better. This time these results must be taken with some skepticism.

Sustained Sequential Write

Version and / or Patch Used: Iometer 2014

Heavy Workload Model

We write to the drive for 1 hour with 128K sequential writes at QD32. We log and chart megabytes per second data at 5-second intervals for 1 hour (720 data points). 60 data points = 5 minutes.

toshiba-ocz-tr200-sata-iii-ssd-review_69

Here we can see the unmasked sequential write performance of the TR200, and it doesn't look very good. We expected to see more from a BiCS flash array, but the drives 2-channel controller is really holding it back.

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