System and method for LUN and cache management

摘要

A method, computer program product, and computing system for defining a first server and a second server within a server cluster. The first server includes a first cache system and the first and second servers are coupled to a data array that includes a LUN. The LUN is reserved for exclusive access by the first server, thus generating a first server reservation. Data associated with the LUN is cached within the first cache system of the first server. A loss of the first server reservation is sensed. In response to a loss of the first server reservation, the first cache system of the first server is purged.

主权项

1. A computer-implemented method 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, wherein the loss of the first server reservation is in response to the second server accessing the LUN; and 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, suspending caching within 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.