Abstract: A persistence management system performs, at a server, operations associated with a number of applications. At the server, a persistence manager can intercept a file system call from one of the applications, wherein the file system call specifies a file located on a remote persistent storage device separate from the server. The persistence manager can determine that data belonging to the file requested by the file system call is stored on a local persistent storage device at the server, retrieve the data from the local persistent storage, and respond to the file system call from the application with the data.

Abstract: A persistence management system performs, at a server, operations associated with a number of applications. At the server, a persistence manager can intercept a file system call from one of the applications, wherein the file system call specifies a file located on a remote persistent storage device separate from the server. The persistence manager can determine that data belonging to the file requested by the file system call is stored on a local persistent storage device at the server, retrieve the data from the local persistent storage, and respond to the file system call from the application with the data.

Abstract: A persistence management system performs, at a server, operations associated with a number of applications. At the server, a persistence manager can intercept a file system call from one of the applications, wherein the file system call specifies a file located on a remote persistent storage device separate from the server. The persistence manager can determine that data belonging to the file requested by the file system call is stored on a local persistent storage device at the server, retrieve the data from the local persistent storage, and respond to the file system call from the application with the data.

Abstract: A method and system for optimized read access to shared data via monitoring of mirroring operations are described. A data storage system performs operations that include one controller in a dual-controller host storage appliance in an asymmetric active/active configuration receiving a request from the host for data on a logical unit number owned by the partner controller. The receiving controller, which has a mirror cache of the partner controller's memory for failure recovery, accesses the mirror cache using a data structure that was populated during previous mirror operations. If the data is found in the mirror cache, it is read from the cache and returned to the requesting host without having to contact the partner controller for the data.

Abstract: A persistence management system performs, at a server, operations associated with a number of applications. At the server, a persistence manager can intercept a file system call from one of the applications, wherein the file system call specifies a file located on a remote persistent storage device separate from the server. The persistence manager can determine that data belonging to the file requested by the file system call is stored on a local persistent storage device at the server, retrieve the data from the local persistent storage, and respond to the file system call from the application with the data.

Abstract: A method and system for optimized read access to shared data via monitoring of mirroring operations are described. A data storage system performs operations that include one controller in a dual-controller host storage appliance in an asymmetric active/active configuration receiving a request from the host for data on a logical unit number owned by the partner controller. The receiving controller, which has a mirror cache of the partner controller's memory for failure recovery, accesses the mirror cache using a data structure that was populated during previous mirror operations. If the data is found in the mirror cache, it is read from the cache and returned to the requesting host without having to contact the partner controller for the data.