Testing throughput with *DEV.NULL
If you have a z/OS® FTP server, you can use the PUt or MVSPut subcommand to copy many files (or one large file) without storing the files on a z/OS FTP server file system. This is useful for testing purposes because you do not have to worry about allocating the disk space on the server system.
Procedure
Example
Command:
cd *dev.null
>>>CWD *dev.null
250-Working directory for PUT is NULL Device;
250 for GET is HFS directory /u/user31
Command:
put a.b a.bbbbb
>>>SITE VARrecfm Lrecl=128 Recfm=VB BlockSize=6144
200 Site command was accepted
>>>PORT 14,0,0,0,4,14
200 Port request OK.
>>>STOR a.bbbbb
125 Storing data set in the Null directory (*dev.null).
250 Transfer completed successfully.
82 bytes transferred in 0.245 seconds. Transfer rate 0.33 Kbytes/sec.
Command:
quit
>>>QUIT
221 Quit command received. Goodbye.