Emc IP Holding Company LLC

Emc Corporation

Orly Devor

Philip Derbeko

Arieh Don

Anat Eyal

Zvi Gabriel Benhanokh

Lior Zilpa

Michael Deift

Eli Ginot

A computer-executable method, system, and computer program product for managing a data storage system using a distributed write-through cache, wherein the data storage system comprises a first node, a second node, and a data storage array, wherein the first node includes a first cache and the second node includes a second cache, the computer-executable method, system, and computer program product comprising providing cache coherency on the data storage system by synchronizing the second cache with the first cache based on I/O requests received at the first node.

Cache consistency

Example embodiments of the present invention relate to a method, a system, and a computer program product for re-syncing a distributed cache after node disconnection. The method includes stopping cache coherency among a plurality of nodes at times a first node among the plurality of nodes is in a disconnected state and determining the first node is no longer in the disconnected state. A second cache at a second node then may dump portions of the second cache at the second node inconsistent with changes made to a first cache at the first node at times the first node was in the disconnected state.

Method and apparatus for fast distributed cache re-sync after node disconnection

A method, computer program product, and computing system for storing a plurality of frontend data chunks within a cache system. The plurality of frontend data chunks correspond to a plurality of backend data chunks stored within a data array. A device weight is determined for each of the plurality of backend data chunks. The device weight is indicative of the type of storage device upon which each of the plurality of backend data chunks is stored within the data array. A deletion score is assigned to each of the plurality of frontend data chunks. Each deletion score is based, at least in part, upon the device weight determined for its corresponding backend data chunk.

System and method for caching data

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Zichron Yaakov, Israel

Orly Devor