Table 3–2 Ops Panel LED States
Starting the Drives
Unless otherwise selected during installation, all drives in the enclosure should automatically
start their motors. If this has not occurred one of the following conditions may exist:
• There may be a power problem (an alarm and power fault indication would normally be
• If there is only one Power Supply/Cooling Module present, the drive motors will spin up
Disk Drives LEDs
Each drive carrier incorporates two indicators, an upper (GREEN) and lower (AMBER). In
normal operation the Green LED will be ON and will flicker as the drive operates.The amber
indicator is OFF during normal operation and ON if there is a drive fault present.
To power the Enclosure down,
• Switch off the Power Supply/Cooling modules installed in the Enclosure.
• Remove AC Mains at the power source
Indicates link speed
in a delayed sequence.
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide