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OWC Mercury Electra MAX 6G 2TB SATA III SSD Review

By: Jon Coulter | SSDs in Storage | Posted: Apr 22, 2016 1:16 pm
TweakTown Rating: 50%Manufacturer: OWC

Iometer – Maximum IOPS

 

Version and / or Patch Used: Iometer 2014

 

We use Iometer to measure high queue depth performance. (No Partition)

 

Max IOPS Read

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_33

 

Max IOPS Write

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_34

 

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_35

 

As we've seen all along, the Electra Max does not scale above QD1. One thing is for sure; there is no way this drive, with this firmware, is capable of hitting the 60K IOPS quoted on OWC's spec sheet.

 

 

Iometer – Disk Response

 

Version and / or Patch Used: Iometer 2014

 

We use Iometer to measure disk response times. Disk response times are measured at an industry accepted standard of 4K QD1 for both write and read. Each test runs twice for 30 seconds consecutively, with a 5-second ramp-up before each test. We partition the drive/array as a secondary device for this testing.

 

Avg. Write Response

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_36

 

Avg. Read Response

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_37

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_38

 

Read response is decent. Write response is terrible, in fact, its 51% higher than Mushkin's Reactor.

 

 

DiskBench - Directory Copy

 

Version and / or Patch Used: 2.6.2.0

 

We use DiskBench to time a 28.6GB block (9,882 files in 1,247 folders) composed primarily of incompressible sequential and random data as it's transferred from our DC P3700 PCIe NVME SSD to our test drive. We then read from a 6GB zip file that's part of our 28.6GB data block to determine the test drive's read transfer rate. Our system is restarted prior to the read test to clear any cached data, ensuring an accurate test result.

 

Write Transfer Rate

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_39

 

Read Transfer Rate

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_40

 

owc-mercury-electra-max-6g-2tb-sata-iii-ssd-review_41

 

Read transfers are acceptable, but write transfer rates are terrible for an MLC-equipped SSD of this capacity. We believe that the lower performing asynchronous MLC flash array that populates the Electra Max is a contributing factor to its low write transfer rate.

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