Test System and Methodology
Our approach to storage testing targets long-term performance with a high level of granularity. Many testing methods record peak and average measurements during the test period. These average values give a basic understanding of performance, but fall short in providing the clearest view possible of I/O QoS (Quality of Service).
While under load, all storage solutions deliver variable levels of performance. "Average" results do little to indicate performance variability experienced during actual deployment. The degree of variability is especially pertinent, as many applications can hang or lag as they wait for I/O requests to complete. While this fluctuation is normal, the degree of variability is what separates enterprise storage solutions from typical client-side hardware.
Providing ongoing measurements from our workloads with one-second reporting intervals illustrates product differentiation in relation to I/O QoS. Scatter charts give readers a basic understanding of I/O latency distribution, without directly observing numerous graphs. This testing methodology illustrates performance variability, and includes average measurements during the measurement window.
IOPS data that ignores latency is useless. Consistent latency is the goal of every storage solution, and measurements such as Maximum Latency only illuminate the single longest I/O received during testing. This can be misleading, as a single "outlying I/O" can skew the view of an otherwise superb solution. Standard Deviation measurements consider latency distribution, but do not always effectively illustrate I/O distribution with enough granularity to provide a clear picture of system performance. We utilize high-granularity I/O latency charts to illuminate performance during our test runs.
We conduct our tests over the full LBA range to allow each HDD to highlight its average performance. The WD Red Pro spins at 7,200 RPM, and will offer higher performance for heavier workloads, and we include it as a reference point for a high-performance RAID alternative. The other drives in the test pool have a 5,400-RPM spindle speed. The 4TB Red in our test pool features previous-generation NASware 2.0, and the 6TB drive features NASware 3.0. The first page of results will provide the "key" to understanding and interpreting our test methodology.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
- Page 1 [Introduction]
- Page 2 [WD Red Internals and Specifications]
- Page 3 [Test System and Methodology]
- Page 4 [Benchmarks - 4k Random Read/Write]
- Page 5 [Benchmarks - 8k Random Read/Write]
- Page 6 [Benchmarks - 128k Sequential Read/Write]
- Page 7 [Benchmarks - Database/OLTP and File Server]
- Page 8 [Benchmarks - Email Server]
- Page 9 [Final Thoughts]
- We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.
Latest News Posts
- COD: Black Ops 4 - Blackout Battle Royale mode goes F2P
- Elite Dangerous devs working on new IP
- Elder Scrolls Online: Elsweyr brings dragons back to Tamriel
- EA cancels new Star Wars game, disrupts release timeline
- New Evil Dead game still happening
- DC: Aquaman Cinema Review
- ADATA SX8200 Pro 256GB NVMe SSD Review
- Problem with RAM Overclock
- Comparison of directory opus and xyplorer
- Z390 Taichi Error Code 99 and A2
- The Silent Guardian: Antec present new Quiet Computing P101 Silent
- A Hero's Journey - Latest Total War: Three Kingdoms Cinematic Showcases A Jaw-Dropping China
- Pre-Order Metro Exodus From Any Physical Retailer To Secure An Exclusive Poster
- Warner Bros. Interactive Entertainment An IO Interactive Launch Hitman HD Enhanced Collection
- Acer Debuts All-New Swift 7 with Compact Design and Incredible Screen-to-body Ratio