Emc IP Holding Company LLC

Qinghua Ye

Assaf Natanzon

Saar Cohen

Brian Lake

Ronald C Unrau

Handling I/O operations between a plurality of virtual machines and a plurality of data storage volumes containing data for the virtual machines includes the virtual machines accessing a virtual data storage cluster engine that transfers I/O data between the virtual machines and the data storage volumes and caches at least some of the I/O data, where the virtual data storage cluster appears as a data storage volume to the virtual machines and includes drivers of at least some of the virtual machines routing at least some I/O operations directly to the volumes, where data for I/O operations that is directly routed does not pass through the virtual data storage cluster engine. Drivers for at least one of the virtual machines on a local site may communicate with drivers on a remote site in response to performing an I/O operation with at least one volume on the remote site.

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Sunnyvale, CA, United States of America

Qinghua Ye