Availability: Phased Out
-8-MB cache buffer
-Super-fast performance
-Whisper-quiet acoustics
-SATA 3Gb/s interface with native command queuing (NCQ)
-Rugged and efficient system design
-Best-in-class operating and non-operating shock resistance for excellent
reliability
-Great value
-RoHS (restriction of hazardous substances) compliant
Applications
-Desktop and High-performance PCs
-Gaming PCs
-Workstations
-Mainstream PCs
-Low-cost Servers and External Storage
-SATA servers
-xATA servers
-USB/FireWire/eSATA external storage
| Specifications | 250 GB |
|---|---|
| Model Number | hd251hj |
| Interface | Serial ATA (SATA) |
| Cache | 8 MBytes |
| Capacity | 250 GB |
| Guaranteed Sectors | 312,581,808 |
| Number of pins on the I/O connector | 22 |
| PHYSICAL | |
| Height (max) | 19.99 mm (0.787 inches) |
| Width (max) | 101.6 mm (4.010 inches) |
| Length (max) | 146.99 mm (5.787 inches) |
| Weight (typical) | 380 grams (0.838 pounds) |
| COMPLIANCE | |
| European Union Restriction of Hazardous Substances | Y |
| PERFORMANCE | |
| Spindle Speed | 7200 rpm |
| Native Command Queuing | Y |
| Average latency | 4.16 msec |
| Maximum interface transfer rate | 300 Mbytes/sec. |
| RELIABILITY | |
| Annual Failure Rate | 0.34 % |
| Unrecoverable read errors | 1 in 10^14 |
| POWER | |
| Average idle current | 8.0 watts |
| Average seek power | 10.90 watts |
| Standby power | 1.50 watts |
| Sleep power | 1.407 watts |
| Maximum start current, DC | 2.80 amps |
| ENVIRONMENT | |
| Ambient Temperature | |
| Operating | 0 to 60 degrees C |
| Nonoperating | -40 to 70 degrees C |
| Maximum operating temperature change | 20 degrees C per hour |
| Maximum nonoperating temperature change | 30 degrees C per hour |
| Maximum operating case temperature | 69 degrees C |
| Relative Humidity | |
| Operating | 5 to 90 |
| Nonoperating | 5 to 95 |
| Maximum allowable humidity change | 30 per hour |
| Altitude | |
| Operating altitude (min) | -60.96 meters (-200 feet) |
| Operating altitude (max) | 3,048 meters (10,000 feet) |
| Nonoperating altitude (min) | -60.96 meters (-200 feet) |
| Nonoperating altitude (max) | 12,192 meters (40,000 feet) |
| Shock | |
| Operating Shock (max) | 63 Gs at 2 msec |
| Nonoperating Shock (max) | 350 Gs at 2 msec |
| Vibration | |
| Operating vibration | 0.25 Gs at5-22 Hz |
| Operating vibration | 0.50 Gs at 22-350 Hz |
| Operating vibration | 0.25 Gs at 350-500 Hz |
| Nonoperating vibration | 0.25 Gs at 5-22 Hz |
| Nonoperating vibration | 5.0 Gs at 22-350 Hz |
| Nonoperating vibration | 1.0 Gs at 350-500 Hz |
| ACOUSTICS | |
| Acoustics (Idle Volume) | 2.7 bels |
| Acoustics (Seek Volume) | 2.9 bels |