HP Cisco MDS 9120 Cisco MDS 9000 Family Fabric Manager Configuration Guide, Re - Page 348

Power Supply Configuration Modes Chapter 18 Managing System Hardware Send documentation comments to [email protected] Note In a Cisco MDS 9500 Series switch, power usage is reserved for both supervisorswhether one or both supervisor modules are present. Power Supply Configuration Modes Switches in the MDS 9000 Family have two redundant power supply slots. The power supplies can be configured in either redundant or combined mode. • Redundant mode-Uses the capacity of one power supply only. This is the default mode. In case of power supply failure, the entire switch has sufficient power available in the system. • Combined mode-Uses the combined capacity of both power supplies. In case of power supply failure, the entire switch can be shut down (depends on the power used) causing traffic disruption. This mode is seldom used, except in cases where the switch has two low power supply capacities but a higher power usage. Note The chassis in the Cisco MDS 9000 Family uses 1200 W when powered at 110 V, and 2500 W when powered at 220 V. To configure the power supply mode, follow these steps: Step 1 In the Fabric Manager Physical Attributes pane, expand Switches and then select Hardware. Click the Power Supplies tab. You see the power supply information screen shown in Figure 18-3. Low TotalAvailable (< 200.0W) values for non-2-slot chassis are highlighted in yellow, as inserting a new card into the switch requires power around 180W. Figure 18-3 Power Supply Information in Fabric Manager Step 2 In Device Manager, click Physical > Power Supplies. You see the screen in Figure 18-4. 18-4 Cisco MDS 9000 Family CLI Configuration Guide OL-16184-01, Cisco MDS SAN-OS Release 3.x