Caching

Caching of file attributes (attrcaching=y) and data (datacaching=y) are recommended for performance. By caching the file data, all subsequent references to the cached data is done locally, avoiding the network overhead. Further authorization checking for subsequent access to the cached data or for other client users is done on the z/OS NFS client system. With attribute caching, z/OS NFS client will perform consistency checks to maintain valid cached data.