HP 659337-B21 1TB 7200 RPM SATA 6.0Gb/s 3.5" internal hard drive

1 TB 7200 RPM SATA drive

This 3.5 inch SATA hard drive delivers 1 TB of capacity at 7200 RPM. It is built for desktop and server chassis that accept a standard 3.5 inch bay. The bare-drive package suits system integrators and IT teams who install their own trays. Buyers needing a smaller 2.5 inch form factor or a hot-plug carrier should look elsewhere.

Sustained throughput on a 6.0 Gb/s link

The drive runs at 7200 RPM with a SATA 6.0 Gb/s interface, so sequential transfer rates stay closer to the interface ceiling during long reads and writes. Average latency is rated at 6 Gb/s, reflecting the bus speed rather than a burst figure. Workloads that stream large files continuously will see steadier performance than with lower-speed spindles.

SATA 6.0 Gb/s practical ceiling

The SATA 6.0 Gb/s interface caps real-world throughput well below its 6.0 Gb/s signalling rate once protocol overhead and command queuing are counted. Mechanical limits of the 7200 RPM platters mean sustained transfers rarely saturate the link. Systems that need higher sustained bandwidth must move to a faster interface than SATA.