Patent ID: 8037241

Claim:
A storage system, comprising: a storage mechanism for storing content; at least one local cache storage unit for mirroring at least a portion of the content stored on the storage mechanism; a write director coupled to the storage mechanism and to the at least one local storage cache for controlling content written into the storage mechanism and to the at least one local storage cache; a cache manager for managing content copying between the storage mechanism and the at least one local storage cache to maintain at least partial content coherency; a read director responsive to a request for content from a user for directing said content request to a selected one of the at least one local storage cache and the storage mechanism depending on content availability of each; and a storage mechanism access manager for monitoring read and write loading of the storage mechanism and for controlling the read and write directors and the cache manager in accordance with the storage mechanism read and write loading, wherein controlling the write directors includes reducing writing to the storage mechanism.