Device Overview

1.7

Reliability

 

(1)

Mean time between failures (MTBF)

 

 

 

 

 

 

 

8760 H/year or less

 

 

Conditions of 300,000 h

 

Power-on time

 

 

 

 

 

 

 

Operating time

20 % or less of power-on time

 

 

 

 

Temperature

5 to 70 °C (DE surface)

 

 

 

 

Humidity

8 to 90 % (ambient)

 

 

 

 

 

 

But humidity bulb temperature

 

 

 

 

 

 

29 °C or less

 

 

 

 

 

 

(For temperatures that exceed the

 

 

 

 

 

 

DE surface temperature range (5 to

 

 

 

 

 

 

70 °C), MTBF is defined

 

 

 

 

 

 

separately.)

 

 

 

 

 

 

 

 

MTBF is defined as follows:

 

 

Total operation time in all fields

MTBF=

(H)

 

number of device failure in all fields (*1)

*1 “Disk drive defects” refers to defects that involve repair, readjustment, or replacement. Disk drive defects do not include failures caused by external factors, such as damage caused by handling, inappropriate operating environments, defects in the power supply host system, or interface cable.

(2) Mean time to repair (MTTR)

The mean time to repair (MTTR) is 30 minutes or less, if repaired by a specialist maintenance staff member.

(3) Service life

1) DE surface temperature -30ºC to 70ºC:

In situations where management and handling are correct, the disk drive requires no overhaul for five years when the DE surface temperature is less than 48ºC.

When the DE surface temperature exceeds 48ºC, the disk drives requires no overhaul for five years or 30,000 hours of operation, whichever occurs first.

2) DE surface temperature over 70ºC:

The disk drive requires no overhaul for 2,000 hours of operation.

Refer to item (3) in Subsection 3.2 for the measurement point of the DE surface temperature. The operating conditions of Service life are based on the equal conditions with MTBF.

(4) Data assurance in the event of power failure

Except for the data block being written to, the data on the disk media is assured in the event of any power supply abnormalities. This does not include power supply

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Fujitsu MHW2060AC, MHW2040AC manual Reliability, Mean time between failures Mtbf, Mean time to repair Mttr, Service life
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MHW2060AC, MHW2040AC specifications

The Fujitsu MHW2040AC and MHW2060AC are notable hard disk drives (HDDs) that have been widely used in various computing applications, especially in laptops and compact devices. These models are part of Fujitsu's commitment to providing reliable storage solutions that meet the demands of modern computing.

The MHW2040AC offers a storage capacity of 40 GB, while the MHW2060AC provides a slightly larger capacity at 60 GB. This range of storage makes both models suitable for users looking for dependable space for documents, multimedia files, and software applications. Both drives utilize a 2.5-inch form factor, ideal for mobile computing, as they are lightweight and designed to fit into space-constrained environments.

In terms of performance, both drives operate at a spindle speed of 5400 RPM. This speed strikes a balance between power consumption and performance, making these drives an efficient choice for everyday tasks, such as web browsing and office applications. The drives are equipped with an interface of Ultra ATA/133, which enables faster data transfer rates compared to older models, thereby enhancing overall system responsiveness.

The MHW2040AC and MHW2060AC also incorporate several advanced technologies to bolster their performance and reliability. One such feature is the use of a fluid dynamic bearing (FDB) for the spindle motor, which minimizes noise and vibration, thus improving the overall user experience. Additionally, both drives come with error correction technology that helps maintain data integrity by detecting and correcting errors during read and write operations.

Moreover, these HDDs feature a shock sensor that can detect sudden movements, allowing the drive to park its heads to prevent data loss and hardware damage. This is particularly beneficial in mobile environments where the risks of impact are higher.

Both the MHW2040AC and MHW2060AC are designed with energy-saving features, making them an environmentally responsible choice for energy-conscious consumers. Their low power consumption not only contributes to a reduced carbon footprint but also extends battery life for portable devices.

In summary, the Fujitsu MHW2040AC and MHW2060AC are reliable, efficient, and user-friendly hard disk drives that combine moderate capacities with advanced features designed to enhance performance, ensure data integrity, and extend device longevity. These drives are well-suited for a range of applications, making them a solid choice for users seeking dependable storage solutions.
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