For a HiRDB/Parallel Server, set the OS environment file before updating to the HiRDB update version.
The service name (pdrshsrv-RNW) of the port for connecting to the SERVICES file (%windir%\system32\drivers\etc\SERVICES) and the number of the port for connecting to the remote command shell are set for the server machines on all units. The port numbers must be the same for the server machines on all units. The same number cannot be reused within a machine.