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Data Deduplication
Data Deduplication refers to the process of eliminating all but one copy of redundant backup data. When multiple systems are backed up to the same storage device, there will often be redundant copies of the same data on separate systems. For example, if 10 workstations in a single office are backed up, all of the systems may contain the same "Company Rules & Regulations" document. It is not necessary to back this document up 10 times, because any of the workstations can be restored from the same single backed-up file. By eliminating this sort of redundant data, Data Deduplication can significantly shrink storage requirements and improve bandwidth efficiency. Data Deduplication lowers storage costs since fewer disks are needed, and shortens backup/recovery times since there can be far less data to transfer.
The Data Deduplication process segments the incoming data stream, uniquely identifies the data segments, and then compares the segments to previously stored data. If an incoming data segment is a duplicate of what has already been stored, the segment is not stored again, but a reference is created to it. If the segment is unique, it is stored on disk. This process can provide an average of 10-30 times or greater reduction in storage capacity requirements, with average backup retention policies on normal enterprise data. This means that companies can store 10TB to 30TB of backup data on 1 TB of physical disk capacity, which has huge economic benefits.
Click here to contact Zibiz about our Data Deduplication solutions
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