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     This story was printed from CdrInfo.com,

     located at http://www.cdrinfo.com.

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Toshiba today launched a line-up of four 2.5-inch enterprise HDDs with a 10,500 RPM rotation speed. The new drives include the AL13SEB900, which offers a capacity of 900GB.

An improved perpendicular magnetic recording technology head and a disk with an enhanced magnetic layer give the AL13SEB900 an areal density of 856Mbit/mm2 (552Gbpsi) and realizes a 900GB capacity, the industry's highest class.

The AL13SEB900 family is the first HDD series from Toshiba to employ a dual-stage head positioning actuator. It integrates a fine actuator with piezoelectric element on the tip of tracking arm that improves on the positioning accuracy of a single stage head positioning actuator by approximately 30%. Highly accurate tracking in a narrow tracking band secures stable operation and improves the reliability of reading and writing.

The energy consumption efficiency of AL13SEB900 is approximately 41% higher than that of its predecessor, MBF2600RC, due to lower power consumption by the controller IC and increased storage capacity. The AL13SEB900 family is also compatible with the European Union's RoHS directive and is Halogen-Free/Antimony-Free.

Toshiba's new HDD line has been designed for enterprise applications, such as servers and storage systems. Volume shipments will start in August.

Specifications

Model Number		AL13SEB900	AL13SEB600	AL13SEB450	AL13SEB300
Capacity		900GB	600GB	450GB	300GB
Average seek time	Read	3.7msec
	Write	4.1msec
Interface		SAS 2.0
Interface speed		6Gb/s
Rotational speed		10,500rpm
Buffer memory		64 MiB
External dimensions		69.85mm (W) x 100.45mm (L) × 15.00mm (H)
Weight		240g (Max.)
Power consumption	Idle	4.7W
	Low power	2.7W
Energy consumption efficiency		0.0044	0.0057	0.0076	0.010
Category name		I			F
Acoustics (Ready)		30dB
Vibration resistance	Operating	9.8m/s2 {1.0G, 20-300Hz}
	Non-operating	49m/s2 {5.0G, 20-300Hz}
Shock resistance	Operating	980m/s2 {100G, 1ms}
	Non-operating	3,920m/s2 {400G, 2ms}