磁盘驱动器
| 单磁道搜索时间（读/写） |
1 ms |
| 平均等待时间 |
4.2 ms |
| 硬盘平均寻找时间 |
12 ms |
| 全程查找 |
20 ms |
| 硬盘容量 |
250 GB |
| 硬盘转速 |
7200 RPM |
| 硬盘接口 |
Serial ATA II |
| 硬盘尺寸 |
2.5 " |
| 传动装置，缓冲区大小 |
16 MB |
| 每扇面字节数 |
512 |
| 硬盘接口传输速率 |
3 Gbit/s |
| 硬盘头数量 |
4 |
| 启动/停止周期 |
600000 |
Travelstar E7K320, 250GB, 7200rpm, SATA 3Gb/s, 16MB
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 with capacities ranging from 80GB to 320GB, 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.
Data security option
Travelstar 7K320 features optional Bulk Data Encryption (BDE) with a SATA 1.5Gb/s interface for hard-drive-level data security. The data is scrambled using a key as it is written to the disk then descrambled with the key as it’s retrieved, giving users a higher level of data protection than traditional password-based security. Another benefit is that it speeds and simplifies the drive re-deployment process. By deleting the encryption key, the data on the drive is rendered unreadable, thereby eliminating the need for time-consuming data-overwrite.
Enhanced Availability (EA)—for 24x7 access to data
Hitachi offers enhanced-availability models that employ specific microcode to allow the
Travelstar 7K320 to provide 24x7 access to data. These models broaden the product line to make it more suitable for data-intensive applications requiring around-the-clock operation. The 7K320 provides high performance, capacity, durability and power utilization on a proven platform for quality and reliability. EA models support the stringent demands of “always-on” applications in lower-transaction environments.
Highlights
-Proven fourth-generation technology.
-Up to 320GB of capacity.
-Lowest power consumption— 22% improvement over 7K200.
-Capacity and power parity with 5400 RPM models.
-Serial ATA 3Gb/s.
-Security option: Bulk Data Encryption.
-Enhanced-availability (EA) models for applications needing around-the-clock access in lower-transaction environments.
Applications/Environments
-Notebook PCs.
-Gaming devices.
-Compact desktop systems.
-Small form factor video devices.
-Blade servers (EA).
-Network routers (EA).
-Video surveillance (EA).
-Compact RAID systems (EA).
