UPS Calculation for PowerEdge T620 with redundant power supply

For UPS calculation of PowerEdge T620 with redundant power supply, Should I choose 1100 watts or 2200 watts.

Please specify which power supply you want to use, which CPU, how many and what drives and how long your system should run without electricity. For short help you can also refer to apc ups selector

In the redundant power supply package, both power supply are sharing loads? if so then what is the efficiency of each power supply? And tell me at max how much watts I can include in UPS calculation at full load?

we are using Auto-ranging Platinum efficiency 1100 watts. I want to know this 1100 watts is for only 1 power supply or package of redundant power supply. If this 1100 watts is for 1 power supply, then in UPS calculation I have to include 1100+1100 watts =2200 watts ?

Dear sir kindly tell me the efficiency of Auto-ranging titanium 750W AC power supply, Auto-ranging platinum 1100W AC power supply.