Enabling and tuning WAN acceleration

Enable WAN acceleration across WAN assets to improve file transfers between FSCs and file download performance to FMS clients. WAN acceleration splits larger files into smaller pieces, transfers file pieces simultaneously, and reconstructs the files before passing the files to the client. WAN acceleration is not enabled by default. Enable WAN acceleration by setting the FSC and FCC transport modes as follows: Configure FMS Server Cache Transport mode Enable WAN acceleration between FSCs: In the FMS primary configuration file (fmsmaster_fscid.xml), ensure that the FSCs are defined in separate fscgroup structures. For example: Copy <fscgroup id="myGroup> <fsc id="fsc_SAMPLE_DB"...>... <fsc id="fsc_CACHE_DB".../>... In the FMS primary configuration file, update or add linkparameter elements with transport="wan" to specify that WAN acceleration is used between the groups. For example: Copy Optionally adjust the FSC_WANThreshold, FSC_WANChunkSize, FSC_DoNotCompressExtensions, and Maxpipes WAN acceleration parameters for your site's operation as described in FSC WAN acceleration tuning parameters. The FSC_MaximumWANDownloadSockets environment variable controls the number of sockets used for WAN acceleration downloads. The default value of 255 allows for a maximum of 25 concurrent WAN downloads (10 sockets per download) to be running at one time. 255 is also the default value of the FSC_MaximumThreads parameter specified in the FMS server configuration file. If you adjust the value of FSC_MaximumWANDownloadSockets to a value greater than the value set for FSC_MaximumThreads, set FSC_MaximumThreads to the same value. If you set FSC_MaximumWANDownloadSockets to a value greater than that of FSC_MaximumThreads, FSC_MaximumWANDownloadSockets is automatically reduced to the same value as FSC_MaximumThreads. Configuring the FMS Client Cache Transport mode Enable WAN acceleration between FSCs and FCCs: In the FMS client configuration file (FMS_HOME/fcc.xml), locate the parent FSC to which the FCC connects and set transport="wan". For example Copy Optionally adjust the FCC_WANThreshold, FCC_MaxWANSources, and FCC_WANChunkSize WAN acceleration parameters for your site's operation as described in General FCC configuration parameters. In the FMS primary configuration file (fmsmaster_fscid.xml), ensure that the parent FSC is included in the client map settings and set transport="wan" for that FSC. For example: Copy Optionally adjust the FSC_WANThreshold, FSC_WANChunkSize, FSC_DoNotCompressExtensions, and Maxpipes WAN acceleration parameters for your site's operation as described in FSC WAN acceleration tuning parameters.