Western Digital WD140EDFZ 14TB 3.5" SATA Internal HDD 5400RPM

14TB of capacity in a full-size 3.5-inch drive. The Western Digital WD140EDFZ 14TB 3.5" SATA Internal HDD 5400RPM is a hard disk drive (HDD) for desktop systems, storage systems and entry-level surveillance recorders.

What each spec means in use

• 14TB capacity: room for archive, backup or CCTV footage. More camera streams or longer retention fill it sooner.
• 3.5-inch form factor: the standard drive size for desktops, external enclosures, NVRs (network video recorders), DVRs (digital video recorders) and NAS (network-attached storage) units.
• SATA III 6Gb/s: a Serial ATA connection. The host needs a free SATA data port and a power connector.
• 5400 RPM class: RPM means revolutions per minute. A slower spin gives lower power use, less heat and quieter running, which helps in enclosed units that stay powered continuously.
• Advanced Format (AF) 4K sectors: suits modern operating systems and improves storage efficiency.

Where it fits

Light to moderate NVR/DVR use: small to medium CCTV systems with a limited number of camera streams. It also suits archive and backup. Basic RAID (redundant array of independent disks) configurations are supported where you want redundancy.

Where it does not

This is an OEM drive labelled for internal use. It is not a dedicated surveillance-grade or enterprise drive. Choose it for controlled workloads where capacity matters more than write endurance.