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Toshiba XG5 1TB OEM M.2 NVMe PCIe SSD Review (Page 8)

By Jon Coulter from Jul 26, 2017 @ 15:03 CDT
TweakTown Rating: 94%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-xg5-1tb-oem-2-nvme-pcie-ssd-review_52

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.

The XG5 manage to deliver a higher average than its predecessors despite its massive variability. The PM961 delivers a 5K higher average than the XG5.

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-xg5-1tb-oem-2-nvme-pcie-ssd-review_79

An hour is more than enough time to fill the drive twice, and the XG5 averaged 944 MB/s for the entire hour.

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