News Releases

Toshiba Launches Enterprise 2.5-inch HDD in Industry's
Highest Capacity Class for Drives with 10,500RPM Rotation Speed

11 Jul, 2012
Image of AL13SEB900

TOKYO—Toshiba Corporation (TOKYO: 6502) today announced the launch of 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 900GB[1] capacity, the industry's highest class[2]. Volume shipment will start in August.

An improved magnetic recording head and disk magnetic layer give the AL13SEB900 an areal density of 856Mbit/mm2 (552Gbpsi) and realizes a 900GB capacity, the industry's highest class. The internal transfer rate is 286 MB/s, a boost of approximately 32% against the previous generation MBF2600RC[3], due to improved liner recording density.

The AL13SEB900 family is the first HDD series from Toshiba to employ a dual-stage head positioning actuator, which improves head positioning accuracy by approximately 30%. It achieves highly accurate tracking in a narrow tracking band, securing stable operation.

The energy consumption efficiency[4] 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[5] and is Halogen-Free/Antimony-Free [6].

Demand for 2.5-inch HDD for enterprise applications is growing, as they have a smaller footprint and overall size and consume less power than 3.5-inch drives, while offering high level processing speeds and generating less heat.

Toshiba will meet the demand for enterprise applications, such as servers and storage systems by enhancing its line-up of 2.5-inch HDD with high capacity drives operating at 10,500 RPM.

Key Features

  1. The industry's highest capacity class for enterprise HDD operating at 10,500 RPM (AL13SEB900)
    AL13SEB900 achieves an industry-leading 900GB capacity by using an improved perpendicular magnetic recording technology head and a disk with an enhanced magnetic layer to realize an areal density of 856 Mbit/mm2 (552 Gbpsi).
  2. Dual-stage head positioning actuator for improved tracking accuracy
    The AL13SEB900 family is the first HDD series from Toshiba to employ a dual-stage head positioning actuator to improve tracking performance. 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.
  3. Improved high speed processing (AL13SEB900)
    Improved linear recording density realizes an internal data transfer rate of 286MB/s, approximately 32% faster than the MBF2600RC.
  4. Environmentally Conscious Products
    (1)   Halogen-Free and Antimony-Free Products
    These HDD products are Halogen-Free/Antimony-Free.
    (2)   High energy consumption efficiency
    AL13SEB900 achieves an energy consumption efficiency of 0.0044, approximately 41 % improvement over the MBF2600RC. Enhanced power management allows the disk to spin at a slower rate when not being addressed, securing a combination of fast recovery from stand-by mode and low-power consumption.
    (3)   Decreased CO 2 emissions throughout lifecycle [7]
    The product family decreases CO 2 emissions across the product lifecycle and AL13SEB900 reduces by approximately 2.4kg per year by cutting power consumption and environmental burdens from the raw materials stage.
    (4)   RoHS compatible
    The new drives are compatible with the European Union's RoHS directive on the elimination of six hazardous substances in electrical and electronic equipment.

About Toshiba Group Environmental Vision

Environmental Vision 2050 guides Toshiba Group in achieving a ten-fold increase in overall eco-efficiency by 2050, compared to 2000, in order to contribute to the future of a sustainable Earth as a "corporate citizen of planet Earth". Toward this goal, we promote initiatives aimed at realizing a world where people lead affluent lives in harmony with the Earth, based on the concept of three "Greens": Greening of Process (environmentally conscious manufacturing process), Greening of Products (environmentally conscious products) and Greening by Technology (contributing through environmental technology).

Toshiba Group promotes its environmental initiatives under the global brand "Toshiba eco style."
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Product 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[8]
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[9]  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}

One Gigabyte (1 GB) is 10 9 =1,000,000,000 bytes. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1GB = 2 30= 1,073,741,824 bytes, and therefore shows less storage capacity.  Available storage capacity (including examples of various media files) will vary based on file size, formatting, settings, software and operating system.
As of July 11, 2012, for enterprise HDD with a rotation speed of over 10,000 RPM. Source: Toshiba
Compared to MBF2RC 600GB model launched in 2010
Energy consumption efficiency is calculated based on power consumption divided by formatted capacity, as defined by Japanese law.
Toshiba Semiconductor & Storage Products Company defines "RoHS Directive" as the Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.
Toshiba Semiconductor & Storage Products Company defines Halogen-Free/Antimony-Free solid state drive (SSD) or hard disk drive (HDD) products as those meeting all of the following requirements:
(a) containing bromine (Br) and chlorine (Cl) in no more than 900 parts per million (ppm) by weight for each element, and containing bromine and chlorine in an aggregate amount not exceeding 1500 ppm by weight; and (b) containing no more than 1000 ppm antimony (Sb) by weight.
For the avoidance of doubt, Halogen-Free/Antimony-Free SSD or HDD products may not be entirely free of bromine, chlorine, or antimony, and may contain any other element of the halogen family.
Comparison based on MBB2147RC (Year 2007 model). Based on Toshiba's evaluation method of LCA (Life Cycle Assessment)
One Mebibyte (1MiB) is calculated as 1,048,576bytes.
Category names defined by Japan's Ministry of Economy, Trade and Industry are applied in the Japanese market.