Netgear XCM8810 Chassis User Manual - Page 75

NETGEAR 8800 User Manual • If a switch has PSUs with a mix of both 220V AC and 110V AC inputs, XCM8800 maximizes system power by automatically taking one of two possible actions: • If all PSUs are enabled then all PSUs must be budgeted at 110V AC to prevent overload of PSUs with 110V AC inputs. OR • If the PSUs with 110V AC inputs are disabled, then the PSUs with 220V AC inputs can be budgeted with a higher output per PSU. XCM8800 computes the total available power using both methods and automatically uses the PSU configuration that provides the greatest amount of power to the switch. Table 13 lists combinations where XCM8800 maximizes system power by disabling the PSUs with 110V AC inputs. Table 13. PSU Combinations Where 110V PSUs Are Disabled Number of PSUs with Number of PSUs with 220V AC Inputs 110V AC Inputs 2 1 3 1 3 2 4 1 4 2 5 1 For all other combinations of 220V AC and 110V AC PSUs, XCM8800 maximizes system power by enabling all PSUs and budgeting each PSU at 110V AC. NETGEAR 8806 switch only-When a combination of 700/1200 W AC PSUs and 600/900 W AC PSUs are powered on in the same BlackDiamond 8806 chassis, all 700/1200 W AC PSUs are budgeted "down" to match the lower powered 600/900 W AC output values to avoid PSU shutdown. Overriding Automatic Power Supply Management You can override automatic power supply management to enable a PSU with 110V AC inputs that XCM8800 disables if the need arises, such as for a planned maintenance of 220V AC circuits. If the combination of AC inputs represents one of those listed in Table 13, you can turn on a disabled PSU using the following command: configure power supply on Chapter 3. Managing the Switch | 75