Hitachi Travelstar 7K320 HTS723212L9A360 Hard Drive - 0A57542
Hitachi HTS723212L9A360 Travelstar 7K320 120GB 7200RPM SATA Internal Hard Drive

Other products by: Hitachi        
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Product Summary
Manufacturer: Hitachi
Mfg Part#: 0A57542
Buy.com Sku: 208292228
Item#: C3EWVE
Buy.com Sales Rank: 77886
See more in Serial ATA Hard Drives
 
Product Guides
 
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.

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.

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.
 

Features
Proven fourth-generation technology
Lowest power consumption— 22% improvement over 7K200
Capacity and power parity with
400 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

 
Tech Specs
Configuration
Interface: SATA 3Gb/s
Capacity (GB): 120GB
Sector size (bytes): 512
Recording zone: 24
Data heads: 4/4/2/2/1
Disks: 2/2/1/1/1
Areal density (max, Gbit/sq.in.): 252

Performance
Data buffer (MB): 16
Rotational speed (RPM): 7200
Latency average (ms): 4.2
Media transfer rate (max, Mbits/sec): 1136
Interface transfer rate (MB/sec): 300
Average (typical) ms (read): 12
Track to track (typical) ms (read): 1
Full stroke (typical) ms (read): 20

Reliability
Load / Unload cycle: 600,000

Power
Requirement: +5VDC (+-5%)
Startup (peak, max): 5.5W
Seek (average): 2.2W
Read / Write (average): 1.8W
Perfomance idle (average): 1.7W
Active idle (average): 1.0W
Low power idle (average): 0.8W
Standby (average): 0.2W
Sleep: 0.1W

Physical size
Height (mm): 9.5
Dimensions (width x depth, mm): 70 x 100
Weight (max, g): 115 // 110

Environmental (Operating)
Shock (half sine wave): 400 G/2ms, 200 G/1ms
Ambient temperature: 5 - 55° C

Environmental (Non-Operating)
Shock (half sine wave): 1000 G/1 ms
Ambient temperature: -40 - 65° C

Acoustics (A-weighted sound power)
Idle (typical, Bels): 2.5
Seek (typical, Bels): 2.8

  
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