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Samsung 850 EVO 500GB SATA III M.2 SSD Review (Page 10)

By Jon Coulter on May 21, 2015 09:15 am CDT - 0 mins, 58 secs reading time for this page
Rating: 98%Manufacturer: Samsung

70/30 Mixed Workload Test (Sledgehammer)

Version and / or Patch Used: Iometer 2014

Heavy Usage 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.

samsung-850-evo-500gb-sata-iii-2-ssd-review_66

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 850 EVO performs a lot better than we expected to see, finishing the test at 20,000 IOPS in a steady state.

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Jon Coulter

ABOUT THE AUTHOR - Jon Coulter

Jon Coulter became a computer enthusiast about the time Windows XP launched. Originally Jon was into water cooling and competitively benching ATI video cards with modified drivers. Jon has been building computer systems for himself and others by request for more than 10 years. Jon became a storage enthusiast the day he first booted his system with an Intel X25-M G1 80GB SSD. Look for Jon to bring consumer SSD reviews into the spotlight.

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