How fast is the Western Digital WD Red 8TB HDD?
WD Red hard drives are designed and tested for compatibility in the unique 24×7 operating environment and demanding system requirements of home and small office NAS.
WD Red is designed specifically for NAS systems that have 1 to 8 drive bays. The drives are designed and extensively tested for compatibility in the unique 24×7 operating environment and for the demanding system requirements of home and small office NAS.
- Reliability
- One your NAS will be constantly on you need reliable drives. This drive will be perfect for constant use with MTBF of up to 1 million hours.
What is MTTR and MTBF? “Mean time between failures” or “MTBF” refers to the amount of time that elapses between one failure and the next.
- Cooler Operations
- By reducing power consumption, the operating temperature of your NAS stays cooler. In srandby or sleep mode this drive consumes only 0.7Wats.
How much does it cost?
It would consume 6kWatts a year which would cost around 2pounds.
WD RED comparison
| Specifications | 8TB | 6TB | 5TB | 4TB | 3TB | 2TB | 1TB |
| Advanced Format (AF) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Native command queuing | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| RoHS compliant | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Performance | |||||||
| Data transfer rate (max) | |||||||
| Interface speed | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s | 6 Gb/s |
| Internal transfer rate | 178 MB/s | 175 MB/s | 170 MB/s | 150 MB/s | 147 MB/s | 147 MB/s | 150 MB/s |
| Cache (MB) | 128 | 64 | 64 | 64 | 64 | 64 | 64 |
| Performance Class | 5400 RPM Class | 5400 RPM Class 5400 RPM Class | 5400 RPM Class | 5400 RPM Class | 5400 RPM Class | 5400 RPM Class | |
| Reliability/Data Integrity | |||||||
| Load/unload cycles | 600,000 | 600,000 | 600,000 | 600,000 | 600,000 | 600,000 | 600,000 |
| Non-recoverable read errors per bits | |||||||
| read | |||||||
| MTBF (hours) | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 |
| Limited warranty (years) | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Power Management | |||||||
| 12VDC ±10% (A, peak) | 1.79 | 1.75 | 1.75 | 1.75 | 1.73 | 1.73 | 1.20 |
| 5VDC ±10% (A, peak) | – | – | – | – | – | – | |
| Average power requirements (W) | |||||||
| Read/Write | 6.4 | 5.3 | 5.3 | 4.5 | 4.1 | 4.1 | 3.3 |
| Idle | 5.2 | 3.4 | 3.4 | 3.3 | 2.7 | 2.7 | 2.3 |
| Standby/Sleep | 0.7 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Environmental Specifications | |||||||
| Temperature (°C) | |||||||
| Operating | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 | 0 to 65 |
| Non-operating | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 | -40 to 70 |
| Shock (Gs) | |||||||
| Operating (2 ms, read/write) | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Operating (2 ms, read) | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| Non-operating (2 ms) | 250 | 250 | 250 | 250 | 250 | 250 | 350 |
| Acoustics (dBA) | |||||||
| Idle | 20 | 25 | 25 | 25 | 23 | 23 | 21 |
| Seek (average) | 29 | 28 | 28 | 28 | 24 | 24 | 22 |