Internal 3.5 inch SAS Hard Drive Western Digital Ultrastar DC HC320 8 TB, 7200 RPM, 12 Gbit/s, 256 MB cache

The Western Digital Ultrastar DC HC320 is an internal 3.5" SAS hard drive with 8 TB capacity, 7200 RPM spindle speed and a 256 MB buffer. Built for traditional data center and enterprise environments, this Ultrastar HDD is designed to deliver reliable random and sequential data access while keeping acquisition costs lower than higher-capacity alternatives. It supports annual workloads up to 550 TB and is suitable for block and file storage architectures, servers and distributed computing setups.

Advantages

The Ultrastar DC HC320 combines 7200 RPM performance with a 3.5" form factor and a SAS interface to provide fast access times and sustained throughput for typical data center tasks. With an 8 TB capacity and a 256 MB buffer, it balances storage density and cost-efficiency. The drive’s specified MTBF and enterprise-grade design aim to ensure dependable operation under continuous use.

Suitable for

• Enterprise servers and storage arrays
• Block storage (SAN) and file storage (NAS) systems
• Distributed and scalable computing environments
• Traditional data center workloads with up to 550 TB/year

Key specifications

• Capacity: 8,000 GB
• Form factor: 3.5"
• Interface: SAS
• Spindle speed: 7200 RPM
• Buffer: 256 MB
• Rated workload: up to 550 TB/year
• MTBF: 2,000,000 hours
• Weight: 0.715 kg
• Manufacturer part number (MPN): 0B36400

How to use

Install the Ultrastar DC HC320 into a compatible 3.5" drive bay or drive tray in a server or storage chassis that supports SAS drives. Ensure the host controller and backplane support SAS connectivity and configure RAID or host volumes according to your storage architecture. Use vendor-recommended firmware and perform regular backups and monitoring to maintain data integrity and drive health.

Recommendations

The drive is intended for traditional data center and enterprise workloads; to maximize reliability, deploy within supported operating temperatures, follow the server or storage vendor’s mounting and cooling guidelines, and use appropriate RAID levels or redundancy for critical data.