The Directory Proxy Server can prime the global indexes on startup from the backend directory server or from a peer proxy server, preferably one that resides on the same LAN or subnet. When priming occurs locally, you can avoid WAN bandwidth consumption and reduce the processing load on the directory servers in the topology. You can specify the data sources for the index priming and the order in which priming from these sources occurs.
prime-index-source property to specify the sources of data, either
file or some combination of the two. The order you
specify is the order in which priming from these sources will be attempted. For example, if you
prime-index-source:file,ds, priming will be performed from the
global-index data file created from the previous run of the
directory servers. With the
configuration, the contents of the global index are written to disk periodically if, and only if,
the entire global index has been primed previously from a directory servers source either from startup or reloaded-index. Priming
is most efficient if the source server is on the same local
network as the Directory Proxy Server.