Patent ID: 8904229
Filing Date: 2014-12-02
Classification: G06F

Abstract:
1. A method of increasing availability of a single point of failure file within a file system stored within a data storage system that includes a set of storage device groups and a storage processor, the single point of failure file being stored within a slice of a pool of slices of a primary storage device group of the set of storage device groups, the storage processor having a cache, the method comprising: mapping the single point of failure file to an additional slice of a pool of slices of a secondary storage device group of the set of storage device groups; detecting a state of a storage device group of the set of storage device groups being one of offline and online; upon each of the primary storage device group and the secondary storage device group being in an offline state: upon either of the primary storage device group and the secondary storage device group being in an online state: