NFS export considerations for versions prior to NFS V4

For NFS exported file systems, the version of NFS you are running with may have an impact on the number of inodes you need to cache, as set by both the maxStatCache and maxFilesToCache parameters on the mmchconfig command. The implementation of the ls command differs from NFS V2 to NFS V3. The performance of the ls command in NFS V3 in part depends on the caching ability of the underlying file system. Setting the cache large enough will prevent rereading inodes to complete an ls command, but will put more of a CPU load on the token manager.

Also, the clocks of all nodes in your GPFS™ cluster must be synchronized. If this is not done, NFS access to the data, as well as other GPFS file system operations, may be disrupted.