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.|