System and method for LUN and cache management

A computer program product residing on a non-transitory computer readable medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:

• defining a first server and a second server within a server cluster, wherein the first server includes a first cache system, and the first and second servers are coupled to a data array that includes a LUN;
• reserving the LUN for exclusive access by the first server, thus generating a first server reservation;
• caching data associated with the LUN within the first cache system of the first server;
• sensing a loss of the first server reservation;
• in response to a loss of the first server reservation, purging the first cache system of the first server;
• and
• in response to a loss of the first server reservation, periodically attempting to re-reserve the LUN for exclusive access by the first server;
• and
• in response to the loss of the first server reservation, the second server reserves the LUN for exclusive access by the second server by providing a unique name that is stored within a data structure and identifies the second server as the only server accessing the LUN.

A computing system including at least one processor and at least one memory architecture coupled with the at least one processor, wherein the computing system is configured to perform operations comprising:

• defining a first server and a second server within a server cluster, wherein the first server includes a first cache system, and the first and second servers are coupled to a data array that includes a LUN;
• reserving the LUN for exclusive access by the first server, thus generating a first server reservation;
• caching data associated with the LUN within the first cache system of the first server;
• sensing a loss of the first server reservation;
• in response to a loss of the first server reservation, purging the first cache system of the first server;
• and
• in response to a loss of the first server reservation, periodically attempting to re-reserve the LUN for exclusive access by the first server;
• and
• in response to the loss of the first server reservation, the second server reserves the LUN for exclusive access by the second server by providing a unique name that is stored within a data structure and identifies the second server as the only server accessing the LUN.