Rebuild your server storage or RAID with Dell ST4000NM0005 XWM1W 4TB 7.2k rpm SAS 12Gbps 3.5" Hard Drive that offers high capacity 4TB storage with rotational speed of 7200 rpm and data transfer rate of 12Gb/s making it one of the most reliable drive with faster read/write performance. Servers and drives using SAS offer the best performance and most flexibility to build an enterprise-level storage solution today. Advantages of SAS interface include Faster Throughput, Better suited to 24/7 workloads, Increased Availability of data, Utmost Flexibility, Built-in redundancy, and High transfer speeds. This hard drive ships with Hot-swap caddie for easy installation in a Dell PowerEdge Server.