https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/General%20Parallel%20File%20System%20(GPFS)/page/Tuning%20Parameters

Customize NSD access

Tuning the NFS server on the home/secondary cluster or the NFS server

https://www.ibm.com/docs/en/spectrum-scale/5.1.5?topic=dr-tuning-nfs-server-homesecondary-cluster-nfs-server