Abstract: An apparatus and method for mirroring data is provided wherein integrity of data on a mirror device is maintained during and after a restore process of data to a standard volume. Because integrity of the mirror is maintained, data from the mirror may be used to perform a later restore to the standard volume if data becomes corrupted, or data is unavailable for any other reason. As a result, the mirror may be used for backup or other operations.

Abstract: A network accelerator storage caching system manages a number of cache management systems and may be inserted at any point in a network to provide a configurable, scalable variety of cache management systems to improve perceived response time. Depending on the configuration(s) selected, a cache management system may manage data in a storage cache on the basis of time-currency, page usage frequency, charging considerations, pre-fetching algorithms, data-usage patterns, store-through methods for updated pages, a least recently used method, B-tree algorithms, or indexing techniques including named element ordering, among others. In a preferred embodiment the configurable cache management is embedded in the storage media, either as firmware in a storage controller or as software executing in a central processing unit (CPU) in a storage controller. In a preferred embodiment the network accelerator storage caching system provides security measures for protecting data and is dynamically configurable.

Abstract: A network accelerator storage caching system that may be inserted at any point in a network, to provide a configurable, scalable variety of cache management systems to improve perceived response time. Depending on the configurations selected, the system may manage data in a storage cache on the basis of time-currency, page usage frequency, charging considerations, pre-fetching algorithms, data-usage patterns, store-through methods for updated pages, least recently used method, B-tree algorithms, or indexing techniques including named element ordering, among others. A preferred embodiment may embed the configurable cache management it the storage media, either as firmware in a storage controller or as software executing; in a CPU in a storage controller. In a preferred embodiment the system is designed to be scalable and provide security measures for protecting data.