This test emulates Database and On-Line Transaction Processing (OLTP) workloads. OLTP is in essence the processing of transactions such as credit cards and high frequency trading in the financial sector. Enterprise SSDs are uniquely well suited for the financial sector with their low latency and high random workload performance. Databases are the bread and butter of many enterprise deployments. These are demanding 8K random workloads with a 66% read and 33% write distribution that can bring even the highest performing solutions down to earth.
The Optimus leverages its exceptional random write performance to provide a large lead in this test.
The Optimus again gives refined performance in the latency department, with the highest results falling into the 20-40ms range. Client SSDs, in contrast, have many operations with such high latency that they are literally off our chart. The 840 Pro has numerous operations fall above 1000ms, and the Vector tops out with a smattering of I/O in the 600-800ms range.
The SMART Optimus manages to pull off a much higher IOPS to Watt rating of 5,171 IOPS, compared to the client competition that average 2,600 IOPS.
All three SSDs perform very closely during preconditioning.
The Webserver profile is a read-only test with a wide range of file sizes. Web servers are responsible for generating content for users to view over the internet, much like the very page you are reading. The speed of the underlying storage system has a massive impact on the speed and responsiveness of the server hosting the websites, and thus the end user experience.
The Samsung 840 Pro has the highest average speed, followed closely by the Vector and SMART Optimus.
In this test, what we see is what we get. There is a nice distribution of latency performance with no outlying I/Os off our chart.
The Optimus loses the IOPS per Watt competition for the first time in this test. The Samsung 840 Pro pulls of a much-needed win, and the Vector follows closely behind.