Data deduplication is the most popular form of storage capacity optimization. Deduplication makes it possible to store more on disk with less backend storage, hence it is a very promising method to eliminate or minimize tape as the backup medium.
The traditional deduplication appliances may reduce the storage required for backups, but it still does not address key issues in data protection for enterprise data centers.
With NetBackup Deduplication which is also available in appliance form factor, you don’t have to worry about any of the above. The data deduplication can be done on client (source deduplication) or on backup servers (target deduplication). By offloading most of the deduplication processing overhead to clients, there is no need to keep adding media servers or adding additional network bandwidth as frontend data size grows.
NetBackup appliances provide two levels of security for backup streams. When using client side deduplication, the unique segments of data are sent to appliance over secure socket layer (SSL) and hence not getting exposed to risks in transit. Additionally, encryption may be configured which occurs on client after deduplication processing is done but before the data enters the network. Thus NetBackup appliances can use encryption for data before transit and it stays encrypted on storage at rest.
Whether you want to deduplicate and encrypt on client or on target backup server can be set on per client basis, per media server basis or globally for all clients. Third party deduplication appliances can only do target deduplication and provide encryption just for the data at rest.
Blogs in this series
The power of NetBackup Deduplication: Distributed processing and secure backup streams (this blog)
The power of NetBackup Deduplication: Application awareness and global deduplication
The power of NetBackup Deduplication: Flexibility and scalability
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