Seagate Exos 7E8 4TB 7.2K RPM SAS 12Gb/s 3.5-Inch 4Kn Enterprise HDD (ST4000NM004A)
The Seagate ST4000NM004A is a 4TB enterprise hard drive from the Exos 7E8 family, designed for 24×7 server and data-center workloads. It features a 7200 RPM spindle speed, dual-port 12Gb/s SAS interface, native 4Kn sector format, and 256MB cache. Seagate specifically lists this model as the 4TB 4Kn SAS version of the Exos 7E8.
- Part Number: ST4000NM004A
- Manufacturer: Seagate
- Series: Exos 7E8
- Capacity: 4TB
- Drive Type: Enterprise HDD
- Interface: SAS
- Interface Speed: 12Gb/s
- Spindle Speed: 7,200 RPM
- Form Factor: 3.5-inch LFF
- Sector Format: 4Kn
- Cache: 256MB
- Interface Ports: Dual-port SAS
- Maximum Sustained Transfer Rate: Up to 226 MB/s
- Average Latency: 4.16 ms
- MTBF: 2,000,000 hours
- Annualized Failure Rate: 0.44% at full 24×7 operation
- Power-On Hours: Up to 8,760 hours/year
- Nonrecoverable Read Errors: 1 sector per 10¹⁵ bits read
- Average Idle Power: 5.79W
- Average Operating Power: 11.12W
- Operating Temperature: 5°C to 60°C
- Dimensions: 101.85 × 147 × 26.1 mm
- Weight: 1.43 lb (649g)
- Warranty: 5-year limited warranty
- Application: Enterprise servers, data centers, storage arrays, and 24×7 nearline storage
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