WD 250 GB WD RE SATA III 7200 RPM 64 MB Cache Bulk/OEM Enterprise Hard Drive WD2503ABYZ<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Industry’s highest capacity near line drive - WD RE SATA hard drives are available in capacities ranging from 2 TB to 4 TB to suit even the most demanding storage needs.</li><li>Highest performance for business-critical applications - WD RE delivers 6 Gb/s transfer rates， sustained sequential data rates of 171 MB/s and high random I/O rates.</li><li>Designed for quality and reliability - With a field-tested 1.2 million hour MTBF， this high performance drive delivers the highest level of reliability for 24x7 operation in up to 100% duty cycle applications.</li><li>Dual processor - Twice the processing power to maximize performance.</li><li>Vibration Protection - Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time.</li><li>Package includes a hard drive only - no screws， cables， manuals included. Please purchase mounting hardware and cables separately if necessary.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51doxP4HSkL.jpg" noproxy>