When your data centre is packed tight and you can’t afford downtime, you need a drive that fits small bays yet delivers reliable, fast access to every gigabyte. The Seagate ST91000640SS-RFB 1TB 7200RPM 64MB SAS Hard Drive is a 2.5-inch, 1 TB nearline HDD designed for 24 × 7 operation, giving you the capacity and speed required for demanding workloads while keeping power use low.
Key Features of a 1 TB Hard Drive
- MTBF: 1400000 h. Exceptional reliability that reduces the risk of unexpected failures.
- Bytes per sector: 512. Standard sector size ensures compatibility with most server environments.
- Average latency: 4.16 ms. Quick response time for read/write operations.
- Read seek time: 8.5 ms. Faster data retrieval when the drive needs to locate information.
- Write seek time: 9.5 ms. Efficient handling of write-intensive tasks.
- Interface transfer rate: 6 Gbit/s. High-speed SAS connection for rapid data movement.
- Buffer size: 64 MB. Large cache improves performance during burst workloads.
- Power consumption (typical): 6.4 W. Low energy draw helps keep operating costs down.
- Operating voltage: 5 V. Compatible with standard server power supplies.
- Weight: 200 g. Light enough for dense rack installations.
Why Choose Seagate Hard Drive
If you manage a space-constrained data centre or a high-density server rack, you often struggle to find storage that fits the limited height while still offering enterprise-grade performance. This 15 mm-high, 2.5-inch drive delivers 1 TB of capacity in a compact form, making it ideal for servers that need to maximise storage per unit of space without sacrificing reliability or speed.
Benefits of Seagate Hard Drive
- Reliability: MTBF of 1.4 million hours means fewer replacements and lower maintenance costs.
- Energy efficiency: Under 6.4 W typical power keeps electricity bills and heat output low.
- Fast access: 7200 RPM speed and low latency deliver quick data retrieval for active workloads.
- Secure data: Optional AES-256 self-encrypting drive protects sensitive information at rest.
Usages of a 1 TB Hard Drive
This 1 TB hard drive is perfect for nearline storage in small-form-factor servers, backup appliances, and high-density rack units where space is at a premium but you still need enterprise-level performance and data protection.
Specifications
| Features |
| Mean time between failures (MTBF) | 1400000 h |
| Bytes per sector | 512 |
| Average latency | 4.16 ms |
| Read seek time | 8.5 ms |
| Write seek time | 9.5 ms |
| HDD interface transfer rate | 6 Gbit/s |
| Storage drive buffer size | 64 MB |
| Type | HDD |
| Interface | SAS |
| HDD size | 2.5" |
| HDD speed | 7200 RPM |
| HDD capacity | 1 TB |
| Power |
| Operating voltage | 5 V |
| Power consumption (idle) | 3.85 W |
| Power consumption (typical) | 6.4 W |
| Operational conditions |
| Non-operating shock | 400 G |
| Operating shock | 70 G |
| Non-operating vibration | 3 G |
| Operating vibration | 0.5 G |
| Operating temperature (T-T) | 5 - 60 °C |
| Weight & dimensions |
| Weight | 200 g |
| Depth | 100.5 mm |
| Height | 15 mm |
| Width | 70.1 mm |
| Packaging data |
| Quantity per pack | 1 pc(s) |
| Logistics data |
| Harmonized System (HS) code | 84717050 |
| Other features |
| Operating temperature (T-T) | 5 - 60 °C |
