Post-process deduplication: In this method, the deduplication process starts after the data is stored. There are two types of data deduplication - post-process deduplication and inline deduplication. The primary focus of data deduplication is to point out large sections of data (which can include entire files or large sections of files) that are identical, and store only one copy of this data. Necessity for and merits of data deduplication During the process, redundant data is deleted, and a single copy of the data is stored on the storage volume. A volume can refer to a disk device, a partition or a grouped set of disk devices-all represented as a single device. This is where data deduplication comes in.ĭata deduplication is a data compression technique to eliminate redundant data and decrease the space used up on an enabled storage volume.

This reduces the space available on a device. As an example, the WhatsApp messenger app saves a different copy of the same image when it is received from different chats or forwarded to different persons. Storage space availability in most systems is used up by copies of the same files. One of the main problems, which is also present when it comes to simple storage systems, is data duplication. The existence of copies of the same files in different locations creates various management problems.

This article explains how Lessfs, a Linux based file system, can be used for data deduplication. It plays an important role in today’s world of rapid and massive data generation, as it helps to save resources, energy and costs. Data deduplication is a specialised technique for compressing data and deleting copies of repeated data.

Best deduplication software