WSH722870ALN6L4

The WSH722870ALN6L4 is a 3.5-inch data-center hard drive in Western Digital’s Ultrastar DC HC680 family of shingled-magnetic-recording (SMR) helium drives, listed on the manufacturer’s SATA 6Gb/s interface. The Ultrastar DC HC680 data sheet gives this model a formatted capacity of 27TB, 7200 RPM spindle speed, a 512 MB data buffer, workload handling of up to 550 TB/year, a projected MTBF of 2.5M hour, 5-year limited warranty, and an operating temperature of 5° to 60°C.

Key figures

• Formatted capacity: 27TB; data buffer: 512 MB.
• Interface: SATA 6Gb/s; form factor: 3.5-inch.
• Spindle speed: 7200 RPM; recording technology: SMR.
• Workload: up to 550 TB/year; projected MTBF 2.5M hour; operating temperature 5° to 60°C.
• Warranty: 5-year limited warranty. Order model WSH722870ALN6L4 (Base (SE), no encryption).

Model number

This page is the customer-orderable model number WSH722870ALN6L4, listed in the data sheet’s Model Numbers table. This data sheet does not publish a frank/part-number table, so no secondary part code is claimed here; the model number above is the manufacturer’s own order code.

What this page does and does not state

The six Ultrastar DC HC680 order codes printed in this data sheet share the spindle speed, buffer, recording technology, workload, reliability and warranty figures above; the formatted capacity is a per-model column (28TB, 27TB or 26TB) and this row asserts 27TB. What else differs by code is the data-security option; the interface is SATA 6Gb/s for every code in the table. Other row-dependent columns (areal density, sustained transfer rate, power figures) are not restated here. The data sheet’s model-number legend labels the N6 interface code as 4Kn while its sector-size row prints 512e: 512; the two are not reconciled here and no sector format is claimed on this page. Reliability figures are the manufacturer’s projected estimates, not measured values. The manufacturer publishes no temperature-grade/qualification standard or lifecycle statement for this family, so none is claimed here.

Data source

Figures are taken from the manufacturer data sheet Ultrastar DC HC680 Data Sheet (©2024 Western Digital Corporation), md5 e5fcfb7c77d19bfec15166a06c554042. This is a manufacturer data-sheet copy, so no public datasheet link is claimed and the external reference points to the manufacturer product page.

Who makes it

The WSH722870ALN6L4 is made by Western Digital Corporation, a United States–headquartered data storage company based in San Jose, California. © 2025 Western Digital Corporation or its affiliates.