I am adding a new HBA to my fas3140 cluster, I need to do it non-disruptively. I know the procedure, but I understand that when I pull out the tray to place the new card in the controller that there is a limited time for the tray to be out before the chassis will shut down. Is this true or just a rumor? A fast response is appreciated.
When you pull out head it is immediately powered off (of course). Chassis itself continues running as long as there is second head. I never tried simply pulling out single, non-clustered, head, so I really do not know what happens in this case.
Regarding timing maybe you're thinking about power supply replacement. In some NetApp hardware you have a limited amount of time to replace before the unit will power itself off entirely to prevent oveheating. I don't believe any rules exist like this for the motherboard tray.