Product Description
WD120EDAZ 12TB — capacity storage for NVR/DVR back ends (SKU: HDD-12TB-Western-Digital-R)
The WD120EDAZ (SKU HDD-12TB-Western-Digital-R) is a 12TB 3.5" internal SATA drive built for high-density storage rather than heavy write endurance — the right spec sheet to check before slotting a drive into a recorder or NAS chassis.
Key specs
- Capacity: 12TB
- Form factor: 3.5-inch internal
- Interface: SATA III, 6Gb/s
- Spindle speed: 5400 RPM class — lower power draw, lower noise, better thermal margin
- Sector tech: Advanced Format (AF) 4K, for storage efficiency and OS/NVR platform compatibility
- Labelling: OEM/internal-use
Where it fits on a job
Deploy the WD120EDAZ for light-to-moderate NVR/DVR recording loads, desktop and external-enclosure storage, general backup/archiving, and NAS builds with modest throughput demands. It integrates with standard SATA infrastructure and works in typical RAID arrays for redundancy.
What it's not
This is not a dedicated surveillance-grade (24/7 high-write) drive. For small-to-medium CCTV installs with controlled workloads it's a sound capacity choice; for continuous multi-channel high-bitrate recording, spec a purpose-built surveillance HDD instead.
Specifications
- Brand
- Western Digital
- Capacity
- 12TB
- Connector Type
- SATA
Technical Specifications
Frequently Asked Questions
Is the WD120EDAZ a surveillance-grade drive?
No — it's not a dedicated surveillance-grade drive; it suits light-to-moderate NVR/DVR workloads and controlled-environment storage rather than continuous high-write recording.
What interface and form factor does it use?
It's a 3.5-inch internal drive with a SATA III 6Gb/s interface, so it drops into standard SATA-based desktop, NAS or recorder bays.
Can it be used in a RAID array?
Yes, it integrates with standard SATA infrastructure and supports typical RAID configurations for redundancy.
Why 5400 RPM instead of 7200 RPM?
The 5400 RPM class speed reduces power consumption and acoustic output while improving thermal efficiency for continuous operation in enclosed systems.
