Abstract: In one aspect of the invention, a search engine parses files stored among one or more file servers in order to create and maintain index information used by the search engine to perform searches. For a given file server, the population of files presented to the search engine is reduced in size to facilitate the process of updating the index. In another aspect of the invention, the file server limits the files presented in a directory list request made by a search engine. This reduces the number of file s that need to be considered when performing an index update.

Abstract: In one aspect of the invention, a search engine parses files stored among one or more file servers in order to create and maintain index information used by the search engine to perform searches. For a given file server, the population of files presented to the search engine is reduced in size to facilitate the process of updating the index. In another aspect of the invention, the file server limits the files presented in a directory list request made by a search engine. This reduces the number of file s that need to be considered when performing an index update.

Abstract: A virtual volume module in a host system provides virtual volume view to user-level and system-level applications executing on the host system. The virtual volume module maps I/O from the applications which are directed to a virtual volume to a first physical volume in a first storage system. When necessary, the virtual volume module can map application I/O's to a second volume in a second storage system. The second storage system replicates data in the first storage system, so that when re-mapping occurs it is transparent to the applications running on the host system.