Buffer utilization has reached the alerting threshold of bufhigh z/OS NFS Server processing attribute. The message prints current data buffer usage in percent of the limit from z/OS NFS Server bufhigh attribute (yyy value) and a value of the limit in Mbytes (xxxxxx value).

mvsnfs

the Network File System Server start up procedure name

yyy

the percent of MVS data buffers used in reference to the limit specified by xxxxxx.

xxxxxx

the maximum MVS internal data buffer pool size (value of attribute bufhigh)