Hi, On solaris I can get an idea of the data getting read or written to with "iostat" - but in linux iostat does not support tape (st) devices it appears, and I haven't found any other way to get this info. Right now to see the rate at which something is being written to tape I have to try and deduce it (disk read speed, strace, etc), but is there a way to get the read/write data rate of st device use? regards, Duncan