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System and method of improving host performance characteristics by intelligent shift of data caching from host to cache-enabled mass storage subsystem
System and method of improving host performance characteristics by intelligent shift of data caching from host to cache-enabled mass storage subsystem
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机译:通过将数据缓存从主机智能转移到支持缓存的大容量存储子系统来改善主机性能特征的系统和方法
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摘要
An arrangement is disclosed for use in connection with a host computer connected to a mass storage subsystem, the mass storage subsystem storing information for use in connection with processing of at least one program by the host computer. The arrangement comprises a program input/output interface, a mass storage subsystem interface and a file system control. The program input/output interface is configured to receive program input/output read and write requests from a program, each program input/output read and write request initiating an input/output operation in connection with information stored on a mass storage subsystem. The mass storage subsystem interface is configured to facilitate communications with the mass storage subsystem, including transferring a storage subsystem input/output read and write request thereto and receiving information therefrom. The file system control is configured to, in response to a program input/output read or write request received by the program input/output interface, generate a storage subsystem input/output read or write request for transmission by the mass storage subsystem interface to the mass storage subsystem and to transfer information to be transferred during the input/output operation between the program input/output interface and the mass storage subsystem interface, and to selectively cache the information in a file system cache maintained by the host computer.
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