PRODUCTDESCRIPTION

Cache Management

Buffer Segmentation

The data buffer is organized into two segments: the data buffer and the micro controller scratch pad. The data buffer is dynamically allocated for read and write data depending on the commands received. A variable number of read and write buffers may exist at the same time.

Read-Ahead Mode

Normally, this mode is active. Following a read request, disk read-ahead begins on the first sector and continues sequentially until the allocated buffer is full. If a read request is received during the read-ahead operation, the buffer is examined to determine if the request is in the cache. If a cache hit occurs, read- ahead mode continues without interruption and the host transfer begins immediately.

Automatic Write Reallocation (AWR)

This feature is part of the write cache and reduces the risk of data loss during deferred write operations. If a disk error occurs during the disk write process, the disk task stops and the suspect sector is reallocated to a pool of alternate sectors located at the end of the drive. Following reallocation, the disk write task continues until it is complete.

Write Cache Stacking

Normally, this mode is active. Write cache mode accepts the host write data into the buffer until the buffer is full or the host transfer is complete. A command complete interrupt is generated at the end of the transfer.

A disk write task begins to store the host data to disk. Host write commands continue to be accepted and data transferred to the buffer until either the write command stack is full or the data buffer is full. The drive may reorder write commands to optimize drive throughput.

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Maxtor 91008D7, 91152D8, 90845D6 Cache Management, Buffer Segmentation, Read-Ahead Mode, Automatic Write Reallocation AWR
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91152D8, 90845D6, 90648D5, 90720D5, 90510D4 specifications

Maxtor, a prominent name in the storage device industry, has developed a series of hard disk drives that cater to various computing needs. Among their lineup, models like the 90720D5, 90648D5, 90840D6, 91152D8, and 90432D3 stand out due to their distinctive features, technologies, and characteristics, making them suitable for both everyday computing and intensive data storage tasks.

The Maxtor 90720D5 is revered for its exceptional storage capacity of 72 GB, providing ample space for users to store a wide variety of files, from documents to multimedia content. This model operates with a spindle speed of 5400 RPM, allowing for a good balance between performance and power consumption, making it ideal for desktop and general-purpose usage.

Moving on to the Maxtor 90648D5, this model boasts a similar spindle speed but offers a larger capacity of 64 GB. With its advanced data integrity features, the 90648D5 utilizes error correction codes to ensure the reliable storage of important files, thus minimizing the risks of data loss.

The Maxtor 90840D6 represents a significant upgrade in terms of performance and capacity. With a storage capability of 80 GB, this drive is designed for users who require more space along with improved read and write speeds. The 90840D6 employs a sophisticated read/write head technology that enhances data retrieval times, ultimately improving overall system responsiveness.

The Maxtor 91152D8 further pushes the boundaries with a sizable 115 GB storage capacity. This model is well-equipped for handling large files, making it a preferred choice for video editing and other data-intensive applications. Additionally, it integrates advanced thermal management technologies to ensure optimal operating temperatures, thus enhancing longevity and reliability.

Finally, the Maxtor 90432D3 serves as a versatile option with a capacity of 43 GB. Recognizing the growing need for efficient storage solutions, this model focuses on providing users with a balance of performance and affordability, appealing to budget-conscious consumers without sacrificing quality.

In summary, the Maxtor 90720D5, 90648D5, 90840D6, 91152D8, and 90432D3 present a comprehensive range of hard disk drives that cater to diverse user requirements. Each model features unique capacities and advanced technologies, ensuring an efficient storage solution that adequately supports both casual users and professionals.
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