Western Digital Ultrastar 4TB internal hard drive 4.1 TB 7200 RPM 128 MB 3.5" Serial ATA

When you are looking for economical, high-capacity enterprise-class storage, look to the Ultrastar 7K6000. Designed to handle workloads up to 550TB per year, it delivers the value and performance you need for data center storage. For best-in-class random write and sequential performance, the Ultrastar 7K6000 delivers 6TB of capacity in a 3.5-inch form factor. Innovations like patented Rotational Vibration Safeguard (RVS) sensor technology optimize drive reliability in multi-drive RAID arrays and rack-mounted systems. Engineered for the highest quality, the Ultrastar 7K6000 passes stringent reliability testing. The ultra-reliable Ultrastar 7K6000 reduces downtime, eliminates service calls and minimizes TCO. Rely on the Ultrastar 7K6000 to deliver value and performance to the cost-sensitive data center.