HP 638521-002 G8 3TB SAS Hard Drive [5 Pack]

The HP 638521-002 is a five-pack of 3TB 3.5-inch SAS hard drives engineered for HP ProLiant G8 and G9 servers. Each drive operates at 7,200 RPM and connects via a 6Gb/s SAS interface, providing the throughput and reliability that enterprise storage environments demand. With five drives in the bundle, administrators get 15TB of raw capacity in a single purchase — ideal for expanding server storage for file shares, backups, media archives, or any workload where capacity takes priority over random I/O speed.

Built to HP's enterprise specifications, these drives are designed to run continuously in server and data center conditions, with SAS connectivity ensuring compatibility with HP's server backplanes and storage controllers. The 7.2K RPM speed class positions them squarely in the nearline storage tier — delivering consistent sequential throughput for large data sets while keeping power consumption and cost below that of 10K or 15K RPM alternatives. For organizations running G8 or G9 infrastructure and needing to scale storage affordably, this five-pack provides a straightforward, server-validated solution.