Operations

−READ MULTIPLE

−WRITE SECTOR(S)

−WRITE MULTIPLE

−WRITE VERIFY SECTOR(S)

3)Caching operation is inhibited by the SET FEATURES command.

4)Issued command is terminated with an error.

5)Soft reset or hard reset occurs, or power is turned off.

6)The device enters the sleep mode.

7)Under the state that the write data is kept in the data buffer for write command as a caching data, new write command is issued. (write data kept until now are invalidated)

6.5.3Usage of read segment

This subsection explains the usage of the read segment buffer at following cases.

6.5.3.1 Mis-hit (no hit)

A lead block of the read-requested data is not stored in the data buffer. The requested data is read from the disk media.

The read-ahead operation is performed only when the last sector address of the previous read command and the lead sector address of this read command is sequential (see item (2)).

1)Sets the host address pointer (HAP) and the disk address pointer (DAP) to the lead of segment.

HAP

Segment only for read

DAP

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Fujitsu MHL2300AT, MHM200AT, MHM2100AT, MHM215OAT manual Usage of read segment, Mis-hit no hit
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MHM215OAT, MHM200AT, MHL2300AT, MHM2100AT specifications

Fujitsu, a leader in storage technology, has developed a range of hard disk drives designed for reliability and performance, catering to both enterprise and consumer needs. The Fujitsu MHM2100AT, MHL2300AT, MHM200AT, and MHM215OAT models are part of this impressive lineup, showcasing various features and technologies that set them apart.

The MHM2100AT model is known for its 2.5-inch form factor, offering a storage capacity of 100GB. It operates at a speed of 5400 RPM, which balances performance and power efficiency. The drive utilizes ATA-6 interface (Parallel ATA) ensuring compatibility with a wide range of systems. One of its primary features is the advanced cache memory architecture, which allows for quicker access to frequently used data. This enhances overall system performance while preserving energy consumption.

The MHL2300AT provides a step up, with its 300GB of capacity. It also maintains a 5400 RPM speed and is designed for optimal heat dissipation and durability. This model is particularly suited for mobile computing applications due to its lightweight design and low power requirements. The MHL2300AT also integrates a sophisticated error correction code (ECC) technology, enhancing data integrity during storage and retrieval processes.

Moving on to the MHM200AT, this unit provides substantial storage of 200GB, maintaining a similar 5400 RPM speed. What sets the MHM200AT apart is its focus on data security with Built-in Security Features such as disk encryption capabilities. This model is suitable for professionals dealing with sensitive information, ensuring both performance and protection against data breaches.

Lastly, the MHM215OAT, another key model, balances user-friendly design with performance metrics. It offers a generous 150GB capacity and features an enhanced seek time for quick file access. With its emphasis on reliability, the MHM215OAT is often utilized in environments where uptime is critical, such as in commercial servers or high-performance workstations.

In conclusion, Fujitsu's MHM2100AT, MHL2300AT, MHM200AT, and MHM215OAT each possess unique features and technologies that cater to diverse user needs. Their combination of efficient power consumption, enhanced data integrity, and reliability make them compelling choices for businesses and individuals alike. Whether for mobile devices, personal computing, or enterprise applications, these models continue to exemplify Fujitsu's commitment to quality and performance in storage solutions.
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