Parallel asynchronous data replication
A primary data storage system and a secondary data storage system are connected with a mesh of network connections during replication procedures from the primary storage system to the secondary storage system. In some implementations, at the primary storage system, file system metadata is analyzed for different subsets of the primary file system to determine changed and/or potentially changed files and/or directories for each subset. ... Overland Storage Inc
Apparatus and method for performing snapshots of block-level storage devices
An improved apparatus and method for performing snapshots of a logical volume within a block-level storage devices is disclosed. When a snapshot is created, the logical volume manager determines the blocks in the relevant volume that are not allocated and lists those blocks in an exception table. ... Overland Storage Inc