NDMP Redirector is introduced in OneFS 8.2.0 and is disabled by default. NDMP Redirector distributes NDMP two-way sessions automatically over PowerScale nodes. You only can enable NDMP Redirector by command-line interface to automatically distribute NDMP two-way sessions to other nodes with lesser loads. Before redirecting the NDMP sessions, NDMP Redirector checks CPU usage, the number of running NDMP sessions, and the availability of tape devices.
Note: Virtual Tape Library (VTL) does not know NDMP Redirector due to LONG FORM READ POSITIONING even though NDMP redirector is enabled. The NDMP two-way sessions still work without NDMP Redirector. OneFS will not distribute NDMP two-way sessions to other nodes if VTL is only configured for the NDMP two-way solution.
Run the following command through the command-line interface to enable NDMP Redirector:
# isi ndmp settings global modify --enable-redirector true
