The File Replication program copies files from a source node to a destination node.  The inter-node connection can be EXPAND or TCP/IP. The File Replication program transfers an exact copy of the selected file set on the source node to the destination node, providing a copy of the files on the remote node.  The transfer is automatic, keeping the files in synchronization, in near real-time.

The CONTROL and CONTROL-CS database files contain internal pointers related to file names. When such a file is transferred to another location the internal pointers become invalid, or "fractured".  The internal pointers must be corrected to make the file usable. After the file replication program completes the file transfer, it invokes NCI-Sync to repair the internal pointers within the file.

The file replication program tracks the status of both source and destination copies of each file it is monitoring.  If the link or remote node is becomes unavailable, the file replication program records any local status changes.  Later, after the trouble is resolved, the replication program transfers the changed files, which are then adjusted by NCI-Sync.

As pre-requisites to licensing NCI-Sync, you must have licensed NCI's CONTROL or CONTROL-CS/NSK product.   NCI-Sync may be licensed and installed on one or both nodes.