WAN optimization storage is used for storing the byte cache and web cache databases. In most cases, you can accept the default WAN optimization storage configuration because all of the disk space available on the FortiGate unit is in one partition. By default WAN optimization and logging and archiving are configured to use this partition.

You only have to configure WAN optimization storage if you have more than one possible storage location. This can happen if you have multiple partitions that you can use for storage locations. If you have more than one storage location you can move WAN optimization storage to it. You can also configure WAN optimization to use multiple storage locations.

You can also optionally configure WAN optimization storage if you want to adjust the relative amounts of disk space available for byte caching and web caching.

This chapter contains the following topics: