Test System and Methodology
Our Enterprise Test Bench is designed specifically to target 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).
'Average' results do little to indicate the 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. This testing methodology illustrates performance variability, and includes average measurements, during the measurement window.
While under load, all storage solutions deliver variable levels of performance. 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.
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 use histograms to illuminate the latency of every I/O issued during our test runs.
We also measure power consumption during test runs. This provides measurements in time-based fashion, with results every second, to illuminate the behavior of power consumption under typical workloads. Power consumption can cost more over the life of the device than the initial acquisition price of the hardware itself. This significantly affects the TCO of the storage solution. We also present IOPS-to-Watts measurements to highlight the efficiency of the storage solution.
We will be utilizing tests specifically tailored to test SSHD's, and we will conduct the remainder of our tests over the full LBA range to allow each HDD to highlight its average performance. Both Seagate HDD's are 600GB, while the MK4001GRRB from Toshiba is only 147GB. This should be taken into consideration when viewing test results. The first page of standard test results will provide the key to understanding our testing methodology.
Update: Unless otherwise noted performance results for the Turbo SSHD are conducted over 33% of the LBA range to highlight caching performance.
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 [Seagate Turbo SSHD Architecture and Specifications]
- Page 3 [Seagate Turbo SSHD Internals]
- Page 4 [Test System and Methodology]
- Page 5 [Exploring Maximum Cache Performance]
- Page 6 [4K Random Read/Write]
- Page 7 [8K Random Read/Write]
- Page 8 [128K Sequential Read/Write]
- Page 9 [Database/OLTP and Fileserver]
- Page 10 [Emailserver and Webserver]
- Page 11 [Final Thoughts]
Recommended for You
- 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
- ROME: Total War is coming to iPhone, August 23rd
- Micron Outs In-House High Performance NVMe SSD Controller
- Silicon Motion Details SM2270 Enterprise SSD Controller
- Fullbright's Gone Hone will debut to the Nintendo Switch
- Dr. Strange/Avengers buildings spotted in Spider-Man trailer
- Buy (10 Pieces) Samsung Galaxy Note9/S9/S9+/S8+ New $1,500
- Buy (5 Pieces) Samsung Galaxy Note9/S9/S9+/S8+ New $1,150
- TRENDnet TWC-L10 Wi-Fi Light Bulb Security Camera Review
- Buy (3 Pieces) Samsung Galaxy Note9/S9/S9+/S8+ New $900
- Buy (2Pieces) Samsung Galaxy Note9/S9/S9+/S8+ New $800
- Let's Ragnarok! Legend of Solgard Launches worldwide on Mobile
- Snail Games Soft Launches My Dino in Canada
- Razer NOMMO Pro is Available For Purchase
- Beat-'Em-Up Coffee Crisis Out On Xbox One Today
- New World Boss Karanda Coming to Black Desert Online SEA