HUS728T8TAL5205

The HUS728T8TAL5205 is a 3.5-inch data-center hard drive in Western Digital’s Ultrastar DC HC320 family, an air-filled CMR platform (7K8 generation), listed on the manufacturer’s SAS 12Gb/s interface. The Ultrastar DC HC320 data sheet gives this model a formatted capacity of 8TB, 7200 RPM spindle speed, a 256 MB data buffer, workload handling of up to 550TB per year, an MTBF of 2M hours with a 0.44% annualized failure rate, 5-year limited warranty, and an operating temperature of 5°C to 60°C. Sector format is Advanced Format (4Kn: 4096, 512e: 512).

Key figures

• Formatted capacity: 8TB; data buffer: 256 MB.
• Interface: SAS 12Gb/s; form factor: 3.5-inch.
• Spindle speed: 7200 RPM; recording technology: CMR (air platform).
• Workload: up to 550TB per year; MTBF 2M hours; AFR 0.44%; operating temperature 5°C to 60°C.
• Warranty: 5-year limited warranty. Order model HUS728T8TAL5205 (SED-FIPS (TCG-Enterprise FIPS)).

Model number

This page is the customer-orderable model number HUS728T8TAL5205, listed in the data sheet’s Model # table for SAS 12Gb/s models. 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

All five Ultrastar DC HC320 order codes share the capacity, spindle speed, buffer, recording technology, workload, reliability and warranty figures above — the data sheet prints them as common columns of one specification table. What differs by code, and what is asserted only for this row, is the interface (SAS 12Gb/s) and the data-security option. MTBF and AFR are given by the manufacturer as 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 HC320 Data Sheet (© 2018-2019 Western Digital Corporation), Rev. 8/19, md5 67484ca76662eaa2bf8be411ada9ce1b. 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 HUS728T8TAL5205 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.