High density disk drive performance enhancement system
AssigneeLSI Corporation
InventorsGregory L. Huff, Daniel S. Fisher, Daniel R. Zaharris
Life of this patent
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AssigneeLSI Corporation
InventorsGregory L. Huff, Daniel S. Fisher, Daniel R. Zaharris
Estimating the term…
The present invention provides an HDD performance enhancement system that utilizes excess disk capacity as cache memory to enhance the I/O performance of the drive. The cache memory is distributed throughout the disk, for example in alternating tracks, sectors dedicated to serving as cache, or other distributed cache track segments or segment groups. Distributing the cache throughout the disk reduces the physical distance of the I/O head to the closest available cache location. The system minimizes the write seek time by storing write data in the closest available cache location. High utilization data blocks are stored in multiple cache location locations to reduce read seek time for high utilization data. The cached data is eventually written to permanent memory and cleared from the cache during idle or low data storage utilization periods.
An enhanced performance high density disk storage system, comprising:
An enhanced performance high density disk storage system, comprising:
A method for enhancing the performance of a high density disk drive that includes a magnetic disk for storing electronic data, the drive operative for spinning the disk, reading data from the disk, and writing data to the disk through an I/O head that travels over the disk, wherein the drive experiences I/O performance comprising write seek times when searching for available space to store write data and read seek times when searching for requested read data, comprising the steps of:
A computer storage disk storing non-transitory computer executable instructions for causing a computer system to enhance the performance of a high density disk drive that includes a magnetic disk for storing electronic data, the drive operative for spinning the disk, reading data from the disk, and writing data to the disk through an I/O head that travels over the disk, wherein the drive experiences I/O performance comprising write seek times when searching for available space to store write data and read seek times when searching for requested read data, comprising the steps of:
Dependencies are inferred from the claim text.