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Fujitsu MHV2040AH, MHV2100AH, MHV2060AH manual Features register values subcommands and functions 2

Models: MHV2040AH MHV2080AH MHV2060AH MHV2100AH

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5.3 Host Commands

Table 5.7

Features register values (subcommands) and functions (2 of 3)

 

 

 

 

 

 

 

Features Resister

 

 

 

Function

X’D5’

 

SMART READ LOG:

 

 

 

 

 

A device which receives this sub-command asserts the BSY bit, then reads

 

 

the log sector specified in the SN register. Next, it clears the BSY bit and

 

 

transmits the log sector to the host computer.

 

 

 

SN:

SC:

Log sector

 

 

 

 

 

 

 

 

 

 

00h:

01h:

SMART log directory

 

 

 

01h:

01h:

SMART summary error log

 

 

 

02h:

33h:

SMART comprehensive error log

 

 

 

06h:

01h:

SMART self-test log

 

 

 

09h:

01h:

SMART selective self-test log

 

 

 

80h-9Fh: 01h-10h:

Host vendor log

 

 

* See Table 5.16 concerning the SMART error log data format.

 

 

 

See Table 5.18 concerning the SMART self-test log data format.

 

 

 

See Table 5.19 concerning the SMART selective self-test log data

 

 

 

format.

 

 

 

 

X’D6’

 

SMART WRITE LOG:

 

 

 

 

 

A device which receives this sub-command asserts the BSY bit and when it

 

 

has prepared to receive data from the host computer, it sets DRQ and clears

 

 

the BSY bit. Next, it receives data from the host computer and writes the

 

 

specified log sector in the SN register.

 

 

 

SN:

SC:

Log sector

 

 

 

 

09h:

01h:

SMART selective self-test log

 

 

 

80h-9Fh: 01h-10h

Host vendor log

 

 

* The host can write any desired data in the host vendor log.

X’D8’

 

SMART ENABLE OPERATIONS:

 

 

This subcommand enables the failure prediction feature. The setting is

 

 

maintained even when the device is turned off and then on.

 

 

When the device receives this subcommand, it asserts the BSY bit, enables

 

 

the failure prediction feature, and then clears the BSY bit.

X’D9’

 

SMART DISABLE OPERATIONS:

 

 

This subcommand disables the failure prediction feature. The setting is

 

 

maintained even when the device is turned off and then on.

 

 

When the device receives this subcommand, it asserts the BSY bit, disables

 

 

the failure prediction feature, and then clears the BSY bit.

C141-E217

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Page 118 Page 120
Page 119
Image 119
Fujitsu MHV2040AH, MHV2100AH, MHV2060AH, MHV2080AH manual Features register values subcommands and functions 2
Page 118 Page 120

MHV2040AH, MHV2080AH, MHV2060AH, MHV2100AH specifications

The Fujitsu MHV series of hard disk drives, specifically the MHV2060AH, MHV2080AH, MHV2100AH, and MHV2040AH, are renowned for their reliability and performance in the mobile HDD segment. Designed primarily for use in laptops and other portable devices, these drives integrate cutting-edge technologies to meet the demands of today's data-intensive applications.

One of the hallmark features of the MHV series is its high data density, allowing for substantial storage capabilities in compact sizes. The MHV2060AH offers a storage capacity of 60 GB, while the MHV2080AH and MHV2100AH offer 80 GB and 100 GB respectively. The MHV2040AH provides a slightly more modest but still robust 40 GB of storage. This range of capacities ensures that users can select the model that best fits their storage needs.

The drives utilize the latest perpendicular magnetic recording (PMR) technology, which enhances recording efficiency and increases data storage densities. This technology significantly optimizes the use of disk surface area, providing better performance and more reliable data access. Additionally, the MHV series incorporates an advanced actuator system that ensures precision head positioning, enhancing data integrity and reducing error rates during read and write operations.

In terms of performance, the MHV series maintains a revolutions per minute (RPM) rating of 5400, which strikes a balance between speed and energy efficiency, making these drives suitable for low-power applications. The drives are also designed with a low acoustic level, generating minimal noise during operation—a crucial factor for mobile users who prefer quieter devices.

Furthermore, the Fujitsu MHV series features a robust shock resistance design, allowing them to withstand the rigors of mobile computing. This makes them suitable for use in portable environments subject to vibration and physical movement, thus ensuring data security and drive longevity.

Overall, the Fujitsu MHV2060AH, MHV2080AH, MHV2100AH, and MHV2040AH represent a formidable selection of mobile hard disk drives filled with advanced technologies and features, making them well-suited for a wide range of applications in today's fast-paced digital world. With their combination of storage capacity, performance, and durability, these drives continue to serve as reliable solutions for users seeking efficient data storage in portable formats.