This operand specifies the below-the-bar virtual storage limit for data buffers for the NFS server. The bufhigh operand does not apply to z/OS UNIX files. Enter the operand as follows:

>>-+-MODIFY-+--nfsserver,bufhigh-+----------------+------------><
   '-F------'                    '-=(xx-+-----+-)-'   
                                        '-,yy-'       

where

bufhigh=xx

the storage limit (in bytes). The valid range is 1 byte to 2047 MB. The new value MUST not be less than the current value of xx. If the specified value is less than the current value, the command will fail and error message GFSA386E is displayed. The upper boundary of the value is limited to 2GB and depends on the amount of free space below 2GB in the job region. If the specified value is more than the amount of free space below 2GB in the job region then the command will fail and error message GFSA386E is displayed. If the new value is omitted in the command the current xx value is not changed.

bufhigh=yy

the watermark in percent of the storage limit (xx) for printing a data buffer utilization alert message. The new value must be within the range 50 to 90, or 0 (zero to switch off the buffer cache monitoring and reporting mechanism).

If there is a command syntax error or an invalid is value specified, an error message is printed and the actual values are unchanged. Otherwise, the values specified become the actual values and are printed to the console.

MODIFY nfsserver,bufhigh