Operator's (Ops) Panel (2U Enclosures) - Lenovo Storage D1212 Hardware Installation And Maintenance Manual

Figure 20. Drawer LEDs
Important: During normal operation, drawers must be kept shut to ensure correct airflow and cooling.

Operator's (Ops) Panel (2U Enclosures)

The enclosure front panel has an operator's (Ops) panel (shown in Figure 21 "Enclosure Front Operator's
Panel " on page 18) on the left hand mounting flange: a flexible cable connects the Ops panel to the
midplane. The Ops panel is a passive component: the midplane controls the panel and the ESMs control all
the panel's functions. An integral part of the enclosure chassis, it is not replaceable on site. The Ops Panel
has these functions:
• System power LED (Green/Amber)
• Module fault LED (Amber)
• Location LED (Blue) (not used)
• Unit identification LED display
• Thermal sensor (behind panel)
. 17
Chapter 2 System Overview