DELL 4 TB 7200 RPM 128 MB SATA 6.0 Gb/s 3.5" Internal Hard Drive

Enterprise capacity for 24/7 workloads

This 4 TB enterprise hard drive spins at 7200 RPM with a 128 MB cache and a SATA 6.0 Gb/s interface. It is built for continuous operation in servers, NAS appliances, RAID arrays, surveillance recorders and desktop PCs that demand sustained throughput. The 3.5-inch form factor fits standard drive bays in rackmount and tower chassis.

Sealed helium platform

The helium-sealed design reduces internal turbulence so the drive runs cooler and quieter in multi-bay enclosures. Rotational vibration sensors compensate for adjacent drives, keeping error rates low when the unit is mounted in dense arrays. A 5-year warranty from the reseller reflects the manufacturer's confidence in 24/7/365 reliability.

Verify SATA power and controller queue depth

Confirm your backplane or motherboard supplies 12 V and 5 V on the SATA power connector; some compact boards omit the 12 V line. Check that your RAID controller or HBA supports native command queuing to exploit the 128 MB cache fully. Ensure the operating system or hypervisor can address volumes larger than 2 TB without legacy MBR limits.