Importance

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Abstract

In association with a storage system, dividing or splitting file system I/O commands, or generating I/O subcommands, in a multi-connection environment. In one aspect, a host device is coupled to disk storage by a plurality of high speed connections, and a host application issues an I/O command which is divided or split into multiple subcommands, based on attributes of data on the target storage, a weighted path algorithm and/or target, connection or other characteristics. Another aspect comprises a method for generating a queuing policy and/or manipulating queuing policy attributes of I/O subcommands based on characteristics of the initial I/O command or target storage. I/O subcommands may be sent on specific connections to optimize available target bandwidth. In other aspects, responses to I/O subcommands are aggregated and passed to the host application as a single I/O command response.

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First Claim