250GB Hitachi Travelstar™ 7K320 High-performance mobile storage without sacrificing capacity or power Travelstar™ 7K320 is the industry’s only fourth-generation 7200 RPM 2.5-inch hard drive equivalent to Hitachi 5400 RPM products. The 160GB per platter one- and two-disk models deliver 60% higher capacity and 12% better application performance than its predecessor. Hitachi provides best-of-breed power and operating shock in Travelstar 7K320 by matching its 5400 RPM models. Designed to support the high-performance needs of multi-tasking commercial users and consumers on-the-go, Travelstar 7K320 offers speed without sacrificing battery life, capacity or audio quality. Hitachi offers optional hard-drive-level encryption for users looking for increased data security and models with enhanced availability to deliver high-capacity storage for non-stop environments. Hitachi quality and service Hitachi Travelstar mobile hard disk drives are designed to the highest quality standards and contain field-proven components. Hitachi provides worldwide technical support and integration services to enable global customers to bring their products to market quickly.
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Travelstar 7K320 Specifications
| Model(s) | HTS723225L9A360 |
| Configuration | |
| Interface | SATA 3Gb/s |
| Capacity (GB)¹ | 250 |
| Sector size (bytes) | 512 |
| Recording zones | 24 |
| Data heads (physical) | 4 |
| Data disks | 2 |
| Max. areal density (Gbits/sq. inch) | 252 |
| Performance | |
| Data buffer (MB)² | 16 |
| Rotational speed (RPM) | 7200 |
| Latency average (ms) | 4.2 |
| Media transfer rate (Mbits/sec, max) | 1136 |
| Interface Transfer Rate (MB/sec, max) | 300 |
| Seek time - Average (typical)ms (read)³ | 12 |
| Seek Time - Track to track (typical) ms (read) | 1 |
| Seek Time - Full stroke (typical) ms (read) | 20 |
| Reliability | |
| Load/unload cycles | 600,000 |
| Warranty | 3 years |
| Power | |
| Requirement | +5 VDC (±5%) |
| Dissipation (typical) - Startup (peak, max.) | 5.5W |
| Dissipation (typical) - Seek (average) | 2.2W |
| Dissipation (typical) - Read / Write (average) | 1.8W |
| Dissipation (typical) - Performance idle (average) | 1.7W |
| Dissipation (typical) - Active idle (average) | 1.0W |
| Dissipation (typical) - Low power idle (average) | 0.8W |
| Dissipation (typical) - Standby (average) | 0.2W |
| Dissipation (typical) - Sleep | 0.1W |
| Acoustics (A-weighted sound power) | |
| Idle (typica, Belsl) | 2.5 |
| Seel (typical, Bels) | 2.8 |
| Physical | |
| z-height (mm) | 9.5 |
| Dimensions (width x depth, mm) | 70 x 100 |
| Weight (max, g) | 115 |
| Environmental (Operating) | |
| Shock (half-sine wave) | 400 G/2ms, 200 G/1ms |
| Ambient temperature | 5 to 55° C |
| Environmental (Non-operating) | |
| Shock (half-sine wave) | 1000 G/1ms |
| Ambient temperature | -40 to 65° C |
Specific application environments such as temperature and duty cycle will affect the overall reliability rates. |
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