If you have specific workload or resource requirements at your site, the LSF administrator can define external resources. You can use both built-in and external resources for LSF job scheduling and host selection.
External load indices report the values of dynamic external resources. A dynamic external resource is a site-specific resource with a numeric value that changes over time, such as the space available in a directory. Use the external load indices feature to make the values of dynamic external resources available to LSF, or to override the values reported for an LSF built-in load index. For detailed information about the external load indices feature, see External Load Indices.