Under RSX, there is a task called IOX, which you can use to exercise the I/O subsystems. It reads/writes to disks, tapes, terminals, whatever. It's a rather good stress test of things. Does anything similar exist under VMS? Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol