Method and apparatus for data access in storage system

Abstract

Embodiments of the present disclosure provide a method and apparatus for data access in a storage system. The solution divides local cache of each of the plurality of controllers in the storage system into dedicated area and shared area, wherein the shared area is uniformly addressed to form a global shared address space. Accordingly, a controller can access and utilize local cache that originally belongs to other controllers, so as to improve cache utilization rate of the storage system. The plurality of controllers in the storage system has a high-speed communication interface therebetween. The solution of the present disclosure enables a controller to utilize cache resources of other controllers in the storage system, so as to achieve the purpose of coordinating cache resources in the storage system.

Dependencies are inferred from the claim text.