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SanDisk Ultra II 240GB SSD Review - SanDisk TLC NAND Flash takes shape (Page 7)

Chris Ramseyer | Sep 12, 2014 at 12:00 pm CDT - 0 mins, 53 secs time to read this page
Rating: 92%Manufacturer: SanDisk

Mixed Read / Write Workloads

In this series of tests, we measure mixed workload performance. We start with 100% read and then add data writes to the mix until we get to 100% writes, in 10% increments. We believe this will be the next major area SSD manufactures will address after performance consistency.

Mixed Workload Bandwidth

SanDisk Ultra II 240GB SSD Review - SanDisk TLC NAND Flash takes shape 61 | TweakTown.com

In our mixed IO test with sequential data, we observed the Ultra II losing a significant amount of performance when writes are included in the mix.

80% Read / 20% Write Bandwidth

SanDisk Ultra II 240GB SSD Review - SanDisk TLC NAND Flash takes shape 62 | TweakTown.com

With 80% reads and 20% writes, the Ultra II is the slowest drive on the charts. This test pushes the drive into steady state with 128K sequential blocks so the SLC doesn't really have a chance to kick in and increase the performance.

Mixed Workload Response Time

SanDisk Ultra II 240GB SSD Review - SanDisk TLC NAND Flash takes shape 63 | TweakTown.com

The random mix test is 50% reads and 50% writes and does not run in steady state. Here the SLC has a chance to work properly, and as you can see in the chart, the SLC layer really helps.

Last updated: Apr 7, 2020 at 12:33 pm CDT

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ABOUT THE AUTHOR - Chris Ramseyer

Chris Ramseyer started his career as a LAN Party organizer in Midwest USA. After working with several computer companies he was asked to join the team at The Adrenaline Vault by fellow Midwest LAN Party legend Sean Aikins. After a series of shake ups at AVault, Chris eventually took over as Editor-in-Chief before leaving to start Real World Entertainment. Look for Chris to bring his unique methods of testing Hard Disk Drives, Solid State Drives as well as RAID controller and NAS boxes to TweakTown as he looks to provide an accurate test bed to make your purchasing decisions easier.

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