Check manual page of statgrab_disk
Reports Disk IO for read and Disk IO for write in Bytes/s during the last check
The check always returns OK state.
Make sure you have the statgrab binary available on the monitored
machine. Under HP-UX you also need to activate the hpux_statgrab agent plugin.
read for Disk IO read and
write for Disk IO write
Finds two checks on every machine with statgrab: Disk IO read and Disk IO write