Lessfs offers a flexible solution to utilize data deduplication on affordable commodity hardware. In recent years, the storage industry has been busy providing some of the most advanced features to its customers, including data deduplication. Data deduplication is a unique data compression technique used to eliminate redundant data and decrease the total capacities consumed on an enabled storage volume. A volume can refer to a disk device, a partition or a grouped set of disk devices all represented as single device. During the process of deduplication, redundant data is deleted, leaving a single copy of the data to be stored on the storage volume.