WD Ultrastar DC HC520 12TB Enterprise Hard Drive – HUH721212ALE604

The WD Ultrastar DC HC520 12TB is a 12TB hard drive from Western Digital, built for servers and data centre workloads that run around the clock. Available in Kuwait from AQWACO with prices in Kuwaiti Dinar and local delivery.

High-Capacity Enterprise Storage Built for Continuous Operation

The WD Ultrastar DC HC520 (HUH721212ALE604) is a 12TB 3.5-inch enterprise hard drive engineered for data centres, NAS arrays, and demanding server environments that require reliable, high-throughput storage around the clock. Running at 7200 RPM with a 256MB cache buffer, it delivers the sustained read/write performance that bulk-storage workloads depend on.

Built on WD’s Ultrastar DC platform, the HC520 uses a SATA III 6Gb/s interface to maximise throughput compatibility across standard enterprise and prosumer infrastructure. The large cache helps smooth sequential operations across large file transfers, video surveillance streams, and deep archival workloads.

At 12TB, this drive is designed for high-density rack configurations where capacity-per-bay directly impacts total storage cost. Its enterprise-grade construction targets 24/7 operational duty cycles in environments where downtime is not acceptable.

Key Details & Benefits

• 12TB capacity — high-density storage per bay, reducing rack footprint in large deployments
• 7200 RPM spindle speed — sustained throughput for read/write-intensive server workloads
• SATA III 6Gb/s interface — broad compatibility with enterprise servers, NAS enclosures, and storage arrays
• 256MB cache buffer — smooths sequential data flow for large file transfers and streaming applications
• 3.5-inch form factor — standard desktop/rack bay sizing for maximum enclosure compatibility
• Enterprise-grade construction — rated for 24/7 continuous operation in data centre and near-line storage environments
• Model code HUH721212ALE604 — SATA variant of the HC520, distinct from SAS configurations for straightforward infrastructure matching

Who Is This For

The WD Ultrastar DC HC520 12TB is built for IT administrators, system integrators, and enterprise procurement teams sourcing high-capacity bulk storage for data centres, surveillance systems, or large-scale NAS deployments. It suits any operation requiring reliable 24/7 duty-cycle performance from a standard 3.5-inch SATA bay, without stepping up to the cost or complexity of SAS infrastructure. Businesses scaling out storage density in existing SATA-based arrays will find the HC520’s 12TB capacity and large cache buffer a cost-efficient upgrade path.

Specialisation

The HC520’s 256MB cache — significantly larger than consumer-grade drives at this capacity — is specifically sized to handle the bursty, concurrent I/O patterns typical of multi-user server environments. The 7200 RPM class positions it above surveillance or nearline-optimised drives that spin at 5400–5900 RPM, delivering faster average seek times where workload latency matters. The SATA 6Gb/s interface ensures the drive slots directly into the widest possible range of existing enterprise and prosumer infrastructure without additional HBA investment.

Comparison Advantage

Against consumer NAS drives of equivalent capacity, the HC520 offers an enterprise-rated duty cycle and a larger 256MB cache buffer that consumer equivalents do not match. Compared to SAS variants of the same HC520 platform, this SATA model delivers near-equivalent sequential throughput at a lower per-unit cost, making it the practical choice for SATA-native storage arrays where SAS backplane investment is unnecessary.

Specifications

• Capacity: 12TB
• Interface: SATA III 6Gb/s
• Form Factor: 3.5-inch
• Spindle Speed: 7200 RPM
• Cache Buffer: 256MB
• Model Number: HUH721212ALE604

Specifications

Frequently Asked Questions

What is the storage capacity of the WD Ultrastar DC HC520 12TB?

The WD Ultrastar DC HC520 12TB has 12TB of storage capacity.

What is the WD Ultrastar DC HC520 12TB best used for?

The WD Ultrastar DC HC520 12TB is designed for servers and data centre workloads that run around the clock.

Can I buy the WD Ultrastar DC HC520 12TB in Kuwait?

Yes. AQWACO stocks the WD Ultrastar DC HC520 12TB in Kuwait, priced in Kuwaiti Dinar (KWD), with delivery available locally.