Input/output request allocation by establishing master command q

Details Input/output request allocation by establishing master command q Input/output request allocation by establishing master command q

1998-05-28

2000-10-31

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

710 39, 711112, 711114, 714 6, 714 7, G06F 300

Patent

active

061417076

ABSTRACT:
A method and apparatus provide input/output allocation between a host and a data storage system. Input/output allocation is accomplished by organizing logical volumes (e.g., disk drives) in the data storage system and queuing requests to the data storage system in a manner which increases the speed and throughput of input/output (I/O) operations. The data storage system is provided from a plurality of logical volumes, each of the logical volumes including a command queue. A master command queue is established from one of the command queues of the logical volumes. The master command queue receives command requests from the host, each command request including an address of data being requested. Each command request is received from the host and stored in the master command queue. The logical volume where the address of the data associated with each command request resides is determined. Each command request is then forwarded to the logical volume where the data being requested resides.

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