As a result, these figures will reflect higher-sustained write speeds. This is different than full entropy tests which use 100% of the drive and take them into a steady state. Our testing process for these benchmarks fills the entire drive surface with data, then partitions a drive section equal to 5% of the drive capacity to simulate how the drive might respond to application workloads. This allows us to repeat the same workloads across a wide range of storage devices, including flash arrays and individual storage devices. These workloads offer a range of different testing profiles ranging from “four corners” tests, common database transfer size tests, to trace captures from different VDI environments.Īll of these tests leverage the common vdBench workload generator, with a scripting engine to automate and capture results over a large compute testing cluster. ![]() While not a perfect representation of actual workloads, synthetic tests do help to baseline storage devices with a repeatability factor that makes it easy to do apples-to-apples comparison between competing solutions. When it comes to benchmarking storage devices, application testing is best, and synthetic testing comes in second place. Looking at SQL Server average latency, the Crucial P5 Plus had an average latency of 103ms, which placed it at the very bottom of the leaderboard by a significant margin (right beside the Samsung 980). Storage Footprint: 600GB allocated, 500GB used.SQL Server Testing Configuration (per VM) Each instance of our SQL Server VM for this review uses a 333GB (1,500 scale) SQL Server database and measures the transactional performance and latency under a load of 15,000 virtual users. The TPC-C benchmark comes closer than synthetic performance benchmarks to gauging the performance strengths and bottlenecks of storage infrastructure in database environments. ![]() StorageReview’s Microsoft SQL Server OLTP testing protocol employs the current draft of the Transaction Processing Performance Council’s Benchmark C (TPC-C), an online transaction-processing benchmark that simulates the activities found in complex application environments. This test uses SQL Server 2014 running on Windows Server 2012 R2 guest VMs and is stressed by Quest’s Benchmark Factory for Databases. While our Sysbench workloads tested previously saturated the platform in both storage I/O and capacity, the SQL test is looking for latency performance. From a system resource perspective, we configured each VM with 16 vCPUs, 64GB of DRAM and leveraged the LSI Logic SAS SCSI controller.
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