Hi All!
Does anyone know anything about the pinout or protocol of the "Comm 1" and "Comm 2" ports on the back on an FC8? (I'm assuming an FC7 has these too.) Or low-level technical documentation for the module these ports are part of? (This module is the one with the two Comm ports, an I2C port, alarm reset button, and fanfail and other LED's.)
I have an FC8, will be getting more, plan to use them as JBODs without a filer head; so far this has been working out quite well. Considering the great utility and low street price of these older components, I'm actually surprised I haven't located any "Netapp Hackers" web site yet -- this list is the closest I've found.
So far, the only thing I've been able to get these ports to do is fault the module (LED's all light up, alarm sounds, disk I/O still chugging away with no errors) by sending a Break on Comm 1. (Using a null modem cable connected to a linux laptop serial port running minicom; N81, baud rate doesn't seem to matter 'cause nothing ever comes back).
Steve