Hitachi announces 2.5 inch hard drives with 750 GB

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Travelstar 7K750.

Hitachi Global Storage has its hard drive portfolio to include two 2.5-inch rows with expanded up to 750 GB. The Travelstar 5K750 works with 5400 U / min, Travelstar 7K750 min at 7200 rev /. The new products are according to the manufacturer, the industry's largest two-wheel drives with a standard height of 9.5 millimeters.

To achieve high storage density, Hitachi is at the 750-gigabyte models for the first time his Advanced formatTechnicians. Here, the sectors are formatted with 4096 bytes instead of 512 bytes.

Both drives feature a SATA interface, 3 Gb / s. The size of the cache is 8 MB for the 5K750 and the 7K750 16 MB.

The average consumption of the low speed variation ranges from 0.5 watts at idle and 1.4 watts during read / write operation. The noise is the manufacturer of 26 decibels and 24 decibels during operation at idle. In the faster version if power consumption (0.7 to 1.8 watts) and noise (25 to 27 decibels) is slightly higher.

cope with both drives according to the manufacturer, Operating shock of 400 G. A "Thermal Fly-height Control (TFC) above technique is to ensure that read / write heads continue to comply with data access a constant distance from the magnetic discs, which the Soft error rate improved and increased reliability.

Agent Bulk Data Encryption (PDF) can be directly encrypt data while writing to the disk. In a search they are then decrypted again. According to Hitachi, this technique is safer than a software-based encryption or a system password. The drives also meet the specification "Opal Security of the Trusted Computing Group (TCG).

Hitachi delivers the Travelstar 5K750 series starting in November with capacities of 500, 640 and 750 GByte. The versions with higher rotational speed in the first quarter of 2011 hit the market. With the models 5K750 7K750 EA and EA, variants are designed for continuous operation. Prices are not fixed yet.

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