Normally, the Network File System ESTAE issues a SVC dump when failure occurs. However, if ESTAE is not able to do this, z/OS® takes over and issues the appropriate dump you coded in your DD statement. This is an example of setting up a DUMP data set:

//SYSMDUMP  DD   DISP=SHR,DSN=MVSNFS.SYSMDUMP    

File attributes of this DUMP data set should be set up like this:

Organization       PS
Record Format      FB
Record Length      4160
Block Size         4160