HUH721212AL520 – 12TB 7200 RPM SATA 6Gb/s 3.5-Inch Ultrastar Enterprise Hard Drive

The Ultrastar HUH721212AL520 from Western Digital is a 12TB enterprise-class 3.5-inch hard drive built on the helium-sealed platform, designed for capacity-oriented enterprise storage. For wholesale buyers, this SKU is a staple for BOM planning: 7200 RPM spindle, SATA 6 Gb/s interface, and a 256 MB cache make it a drop-in choice for storage arrays, JBOD expansion, and bulk-data server builds where cost per terabyte drives the purchasing decision. Integrators deploying high-density enclosures should validate chassis airflow and platform configuration to realize the drive’s efficiency benefits.

We stock this model in volume with consistent batch and firmware versions across shipments, which matters for resellers and system integrators who need uniform drives within a single project or across multi-wave deployments. Mixed-firmware deliveries can complicate validation and imaging pipelines; we mitigate that by shipping from matched lots wherever inventory allows. Stock status, lot information, and current allocations are confirmed at quotation stage.

Key specifications (table)

Parameter	Specification
Model	HUH721212AL520
Series	Ultrastar (Western Digital’s enterprise hard drive family)
Capacity	12 TB
Interface	SATA 6 Gb/s
Form Factor	3.5-inch
Spindle Speed	7200 RPM
Cache	256 MB
MTBF	2.5 million hours
Workload Rating	Up to 550 TB/year
Technology	Helium-sealed (enhances power efficiency, reduces heat)
Power Consumption	Optimized for lower energy use in enterprise environments

Procurement Highlights

• SATA 6 Gb/s connectivity means broad compatibility with existing server, JBOD, and NAS backplanes — no SAS HBA investment required. Buyers should verify backplane and controller compatibility before placing volume orders; our team can advise on common platform pairings.
• The helium-sealed design at the 12TB class delivers improved power efficiency and thermal characteristics versus air-filled alternatives — a relevant factor when quoting TCO to your own enterprise customers.
• The 550 TB/year workload rating and 2.5M-hour MTBF support enterprise positioning in your downstream sales documentation. Confirm firmware requirements and workload sizing with your integration team before committing to bulk quantities.
• All shipments comply with CE, FCC, and RoHS requirements, with export documentation provided for cross-border orders.
• Warranty and RMA handling is streamlined for channel buyers: defective units within the RMA window are processed through our B2B support channel with clear turnaround targets, so your end-customer commitments stay protected.

Wholesale & Procurement Notes

• MOQ negotiable depending on configuration and destination market.
• Tiered volume pricing available — pricing improves with order quantity; request a wholesale quote for current tiers.
• Typical lead time: 3–10 business days for in-stock volumes; larger allocations quoted individually.
• Packing & shipping options include anti-static single drives, bulk trays, and consolidated pallet freight with insurance.
• Standard RMA window applies from receipt of goods; contact B2B support for warranty claims handling.