Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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HGST
HGST HUA721010KLA330 1TB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive
A 1 TB desktop drive spinning at 7200 RPM with 32 MB cache and a SATA 3.0Gb/s interface
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity1TB
- RPM7200 RPM
- Cache32MB
- Average Seek Time8.2ms
- 1 TB capacity stores large data sets
- 7200 RPM speed enables fast file access
- 32 MB cache improves read and write throughput
- 2 million hours MTBF supports reliable long-term operation
- Enhanced RVS technology maintains performance under vibration
Enterprise-grade capacity
The HGST Ultrastar A7K1000 delivers 1TB of storage on a 3.5-inch desktop form factor. It spins at 7200 RPM with 32MB cache and a SATA 3.0Gb/s interface for enterprise environments with lower duty cycles.
Check your system first
Verify your motherboard or controller provides a free SATA 3.0Gb/s port and a 3.5-inch drive bay with mounting points. Ensure the power supply includes a spare SATA power connector for the bare drive.
Thermals noise and power
The 7200 RPM spindle produces typical mechanical noise and heat for enterprise-class drives. Average seek time is 8.2ms with 4.17ms latency, reflecting standard rotational vibration safeguards for continuous operation.
Highlights
- 1 TB capacity stores large data sets
- 7200 RPM speed enables fast file access
- 32 MB cache improves read and write throughput
- 2 million hours MTBF supports reliable long-term operation
- Enhanced RVS technology maintains performance under vibration
Specifications
| Brand | Hitachi GST |
|---|---|
| Series | Ultrastar A7K1000 |
| Model | HUA721010KLA330 (0A35772) |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 1TB |
| RPM | 7200 RPM |
| Cache | 32MB |
| Average Seek Time | 8.2ms |
| Average Latency | 4.17ms |
| Features | World's first terabyte hard drive for the enterprise – Ideal for lower duty cycle storage in enterprise environments Targeted 1.2 million hours MTBF Enhanced Rotational Vibration Safeguard (RVS) for robust performance in multi-drive environments |
| Usage | For Daily Computing |
| Form Factor | 3.5" |
| Shipping weight | 1.36 kg |
| Package size | 203 × 152 × 51 mm |
Questions about this item
Does the bare drive include cables or mounting brackets?
The drive is supplied as a bare unit only; SATA data and power cables plus 3.5" mounting screws must be sourced separately.
Should I choose the 1TB 7200 RPM model or a different capacity from the Ultrastar A7K1000 series?
This specific HUA721010KLA330 model is the 1TB 7200 RPM 32MB cache variant; other capacities in the series carry different model numbers and specifications.
What does the 1.2 million hour MTBF mean for daily desktop use?
The 1.2 million hour MTBF rating indicates enterprise-grade reliability designed for continuous operation in lower duty cycle storage environments.
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