Symmetric data deduplication reduces the amount of bandwidth consumed across a WAN link for repeated data transfers. This feature is available only with an Application Acceleration Manager (AAM) license.
With data deduplication, the system performs pattern matching on the transmitted WAN data, rather than caching. If any part of the transmitted data has already been sent, the BIG-IP system replaces the previously transmitted data with references. As data flows through the pair, each device records the byte patterns and builds a synchronized dictionary. If an identical pattern of bytes traverses the WAN more than once, the BIG-IP closest to the sender replaces the byte pattern with a reference to it, compressing the data. When the reference reaches the other side of the WAN, the remote BIG-IP device replaces the reference with the data, restoring the data to its original format.
Perform these tasks to manage symmetric data deduplication.
|Disk||Specifies that iSession uses the disk, in addition to memory, for
storing information used for optimization.
Note: If you enable data storage on the disk, you must restart the datastor service from the command line using the command sequence bigstart restart datastor for the change to take effect.
|Memory||Specifies that iSession uses only memory for storing information
used for optimization.
Note: This setting can provide benefits for higher speed links.
|SDD v3||Supports a high spoke count, such as for connecting remote sites and for mesh topologies.|
|SSD v2||Supports a topology with fewer than eight spokes, such as replicating data between data centers.|