![]() ![]() In terms of write performance, it came in second to the HGST 10K900. The WD Xe slots into the middle of the pack, coming in just under the Seagate Savvio 10K.7 in read performance and trails the HGST 10K900 at the top of the pack. In the first of our enterprise workloads, we measured a long sample of random 4k performance with 100% write and 100% read activity to get our peak sustained random I/O results. We also included two legacy mixed workloads, the traditional File Server and Webserver, each offering a wide mix of transfer sizes. These profiles have been developed to make it easier to compare to our past benchmarks as well as widely-published values such as max 4k read and write speed and 8k 70/30, which is commonly used for enterprise drives. Our Enterprise Synthetic Workload Analysis includes four profiles based on real-world tasks. Latency Standard Deviation (Read+Write Standard Deviation Averaged Together).Max Latency (Peak Read or Write Latency).Average Latency (Read+Write Latency Averaged Together). ![]() Preconditioning and Primary Steady-State Tests: Since hard drives reach their rated performance level very quickly, we only graph out the main sections of each test. Our enterprise hard drive benchmark process preconditions each drive into steady-state with the same workload the device will be tested with under a heavy load of 16 threads with an outstanding queue of 16 per thread, and then tested in set intervals in multiple thread/queue depth profiles to show performance under light and heavy usage. ![]() Memory – 8GB (2 x 4GB) 1333Mhz DDR3 Registered RDIMMs.Windows Server 2008 Standard Edition R2 SP1 64-Bit and CentOS 6.2 64-Bit.The ThinkServer RD240 is configured with: This differs from its HGST-cousin C10K900 which leverages an LSI controller with a 64MB DRAM buffer.ġ0,000RPM Enterprise HDD comparables for this review:Īll enterprise HDDs are benchmarked on our enterprise testing platform based on a Lenovo ThinkServer RD240. Western Digital uses a very basic external drive design, with a black alloy case and a circuit board using all available space allowed by its form-factor.Īt the heart of the Western Digital SAS-based Xe is a Marvell i1248-C2 controller leveraging 32MB of Samsung DRAM for buffer. It offers an industry-standard SAS 6Gb/s connection, although its peak sequential transfer rate is rated at 204MB/s. The WD Xe is a 2.5" enterprise SAS HDD with a 15mm z-height. Physical Dimensions: 100mm x 69.85mm x 15mm.Non-recoverable read errors per bits read: Our review units include 16 of the 900GB capacity. WD also offers two other drives for this market the Re, a 4TB 7,200 RPM SATA drive for mainstream storage and the Se, a 4TB 7,200 RPM SATA drive tuned for NAS and scale out architectures. The WD Xe comes in 300GB, 450GB, 600GB, and 900GB capacities and are compatible with the 3.5" heat sync for environments that require it. The Xe slots in as the mainstream performance hard drive for the enterprise datacenter market. These features and others lead the Xe to an industry-high 2,000,000 hours MTBF. This feature set is highlighted by key items like Rotary Acceleration Feed Forward (RAFFTM), which optimizes operation in vibration-prone environments, and NoTouch ramp load technology, which means the head never touches the disk media. The drives incorporate a bevy of technology designed to ensure long term operation in the enterprise. WD has focused significant engineering effort for the Xe line. WD also offers an optional 3.5" bracket/heat sync that lets the Xe fit into legacy 3.5" environments, where they can be use to replace lower capacity and more expensive to operate 3.5" 15K drives. ![]() The drives are offered in capacities up to 900GB and a self encrypting drive (SED) option is available across the entire lineup. The Xe drives spin at 10,000 RPM, offers a 32MB cache and provide throughput of up to 204MB/s. The WD Xe is a 6Gb/s SAS hard drive in a 2.5" 15mm form factor. ![]()
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