Chapter 1 Introduction22 Storage Center SC8000 Controller Deployment GuideSC200/220 Back-Panel Features and IndicatorsThe enclosure back panel provides controls to power up and reset the enclosure, indicatorsto show the enclosure status, and connections for back‐end cabling.Figure 19. SC200/SC220 Back Panel Features and IndicatorsItem Name Icon Description1 DC power indicator • Green: Normal operation. The power supplymodule is supplying DC power to the enclosure.• Off: Power switch is off, the power supply is notconnected to AC power, or there is a fault condition2 Power supply/coolingfan indicator• Amber: Power supply/cooling fan fault is detected• Off: Normal operation3 AC power indicator • Green: Power supply module is connected to asource of AC power, whether the power switch is on• Off: Power supply module is disconnected from asource of AC power4 Power switches (2) — Controls power for the enclosure. There is one switchfor each power supply/cooling fan module.5 Power supply/coolingfan modules (2)— Contains a 700 W power supply and fans that providecooling for the enclosure6 Enclosure ManagementModules (2)— EMMs provide the data path and enclosuremanagement functions for the enclosure! !Compellent SC2Compellent SC24215 63