Methods and apparatus for storing updatable user data using a cluster of application servers

摘要

A method for storing updatable user data using a cluster of application servers includes: storing updateable user data across a plurality of the application servers, wherein each application server manages an associated local storage device on which resides a local file system for storage of the user data and for metadata pertaining thereto; receiving a point-in-time copy (PTC) request from a client; freezing the local file systems of the plurality of clustered application servers; creating a PTC of the metadata of each frozen local file system; and unfreezing the local file systems of the plurality of clustered application servers.