The term de-duplication basically means elimination of redundant data. In the de-duplication process duplicate data are deleted, leaving only one copy of the data to be stored. However indexing of all data is still retained just in case the data is still required. For example, a typical email system might contain 100 instances of the same one megabyte (MB) file attachment. If the email platform is backed up or archived, all 100 instances are saved, requiring 100 MB storage space. With data de-duplication, only one instance of the attachment is actually stored; each subsequent instance is just referenced back to the one saved copy. In this example, a 100 MB storage demand could be reduced to only 1 MB.
Avamar is a backup and recovery solution of EMC, which utilizes data deduplication technology to identify redundant data at the source, minimizing backup data before it gets transported via LAN/WAN.
Data Domain deduplication storage systems reduce the amount of disk storage needed to retain and protect enterprise data. By identifying redundant files and data as they are being stored, the product can dramatically reduce the storage footprint of the original data.
Veritas NetBackup PureDisk uses data deduplication and integration with NetBackup to enable efficient, storage-optimized, data protection for data center, remote office, and virtual environments. The deduplication engine can be deployed within NetBackup or independently using a PureDisk client. The modular architecture and integrated replication features simplify scalability and disaster recovery.
.... to be continued
JonQBX
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment