Today, one of our IBM system3650X series server encountered an DASD error.
An orange Exclamation light turned ON and the server was not booting properly. This server have 2 HDD running in RAID mode. both HDD green lights were flashing properly which was showing that the HDD are in good condition. So I applied the Power Recycling solution and it worked like a charm🙂 .
Howto do Power Recycling / Cold Restart
# Shutdown the Server
# Remove Power cables (both) from power supply.
# Wait for 10 Minutes,
# Now plugin the power cables and turn ON the servers and you won’t see orange light🙂
More information can be found here