Apparatus and method for sharing resources between storage devices

摘要

A method for allocating resources of a storage system including at least a first and second group of storage devices. The method identifies a first set of resources to be reserved for use by the first group of storage devices, identifies a second set of resources to be reserved for use by the second group of storage devices, and identifies a third set of resources The method then allocates resources from the third set of resources to the first group of storage devices or the second group of storage device according to an allocation algorithm, and restricts use of the first set of resources to the first group of devices and use of the second set of resources to the second group of devices.

主权项

1. A method for allocating resources of a storage system, comprising:
providing a storage system in communication with a remote host computer comprising a storage management program, wherein said storage system comprises a plurality of attached storage devices; sampling an actual read/write performance for each attached storage device; based upon said actual sampling, allocating an attached storage device to a first group of storage devices or to a second group of storage devices; allocating by said storage management application a number of task control blocks for use by the first group of storage devices; allocating by said storage management application PCI address space to said first group of storage devices; determining by said storage management application a third set of task control blocks and PCI address space resources that are generally assignable between storage device groups; restricting by said storage management application use of the first set of task control blocks and first PCI address space resources to the first group of storage devices and use of a second set of task control blocks and PCI address space resources to a second group of storage devices.