Western Digital WUH721818ALE6L4 – 18TB 7200 RPM SATA 6Gb/s Ultrastar Enterprise Hard Drive

The Western Digital Ultrastar WUH721818ALE6L4 is a high-capacity 18TB enterprise hard drive in regular demand among our reseller and system-integrator clients for storage arrays, backup appliances and cloud-tier builds. As a wholesale supplier, we maintain rotating stock of this model and can support both single-batch and split shipments. Buyers planning large deployments should confirm backplane and controller compatibility, particularly if SED variants are required, and are advised to specify SED/non-SED configuration at time of order so batch consistency is preserved across the shipment.

Key specifications (table)

Parameter	Specification
Capacity	18 TB
Interface	SATA 6Gb/s
Form Factor	3.5-inch
Spindle Speed	7200 RPM
Cache	512 MB
Technology	HelioSeal® (helium-filled for low power and high capacity)
MTBF	2.5 million hours
Workload Rate Limit	Up to 550 TB/year
Encryption	Self-Encrypting Drive (SED) models supported
Vibration Protection	RAFF™ rotational vibration tolerance technology

Supply & Sourcing Overview

For procurement teams, this SKU offers a strong cost-per-terabyte profile for sequential and mixed I/O workloads, making it a reliable volume item for VARs building dense storage enclosures. Stock is typically available from allocated warehouse inventory, and we can supply same-batch quantities for projects that require firmware and manufacturing-date consistency across drives.

Warranty & RMA Handling

Units shipped from our facility are covered by the supplier-side warranty period applicable to the batch, with a structured RMA process: defect reporting, testing verification, and replacement or credit issuance. Full RMA documentation and serial-number manifests are provided with every wholesale shipment to simplify your after-sales handling.

Compliance & Export

Shipments are prepared with CE, FCC and RoHS declarations available on request, suitable for distribution in most export markets. Our logistics team handles standard export documentation; buyers are responsible for verifying import regulations in the destination country.

Suitability for Resellers & Integrators

• Standard SATA 6Gb/s interface drops into most server and JBOD enclosures without special HBAs; SED operation requires a controller or software stack supporting self-encrypting drives.
• Ultrastar sits in Western Digital’s enterprise tier above IronWolf (NAS) and SkyHawk (surveillance), giving resellers a clear upsell path for commercial deployments.
• RAFF™ vibration tolerance and 550 TB/year workload rating make it well suited to dense multi-drive chassis commonly specified by system integrators.
• Integrators deploying helium drives should validate rack density and cooling; batch test data can be requested prior to volume orders.

For volume pricing, batch allocation and current availability, request a wholesale quote from our sales team.

Wholesale & Procurement Notes

• MOQ negotiable depending on stock position and destination market.
• Tiered volume pricing available — request a quote for project-based or ongoing supply.
• Typical lead time: 3–7 business days for in-stock items; 2–4 weeks for allocated batches.
• Packing & shipping options: anti-static bulk packs, individual retail boxes, palletized freight, air or sea export.
• RMA window: 30 days DOA coverage plus supplier warranty term; contact sales for full RMA terms.