Method for implementing shared disk array management functions.

摘要

Method of dynamically sharing management of a redundancy group (40) in a data storage system between two or more array management functions (AMFs) (80), wherein the AMFs (80) are able to concurrently access the redundancy group (40), the redundancy group (40) including a plurality of resources, the method comprising the steps of:
determining an arbiter AMF for a first one of the resources, wherein the arbiter AMF is one of the two or more AMFs sharing management of the redundancy group (40), and wherein the arbiter AMF is able to grant a lock for the first resource;
communicating a lock request from a first one of the AMFs to the arbiter AMF requesting a lock on the first resource; and
performing an operation on the first resource by the first AMF once the lock on the first resource has been granted by the arbiter AMF; characterized in that the step of determining the arbiter AMF includes assigning the AMF that last had a write lock on the first resource to be the arbiter AMF.