Abstract: A method, computer program product, and computing system for determining a queue depth and a flush rate for each of a plurality of pending data queues associated with a cache system, thus defining a queue depth/flush rate pair for each of the plurality of pending data queues. A predicted drain time is determined for each of the plurality of pending data queues based, at least in part, upon the queue depth/flush rate pair, thus defining a plurality of predicted drain times that are respectively associated with the plurality of pending data queues.

Abstract: Improved techniques for maintaining cache coherence in a consistent state are provided. These techniques implement a data storage system using a journaled mirrored cache that ensures that storage operations making up certain transactions be performed atomically, so that a system failure does not result in data loss. The improved techniques also allow for efficient communication of mirroring information.

Abstract: A method and system for use in managing enhanced write caching is disclosed. In at least one embodiment, the method and system comprises performing write-back caching operations using a write cache of a storage processor of a data storage system. A first cache page corresponding to a disk location is provided in the write cache. A host is allowed to write to a second cache page in the write cache corresponding to the same disk location. Both the first and second cache pages are maintained after acknowledging the write to the host.