The following list describes some key issues to remember when identifying your power needs and installing PSUs:
OR
ExtremeXOS computes the total available power using both methods and automatically uses the PSU configuration that provides the greatest amount of power to the switch. The following table and the following table list combinations where ExtremeXOS maximizes system power by disabling the PSUs with 110V AC inputs. This can be overridden if desired, as described in Overriding Automatic Power Supply Management.
BlackDiamond 8800 Series PSU Combinations Where 110V PSUs Are Disabled
| Number of PSUs with 220V AC Inputs | Number of PSUs with 110V AC Inputs |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 3 | 2 |
| 4 | 1 |
| 4 | 2 |
| 5 | 1 |
BlackDiamond X8 Series PSU Combinations Where 110V PSUs Are Disabled
| Number of PSUs with 220V AC Inputs | Number of PSUs with 110V AC Inputs |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 3 | 2 |
| 4 | 1 |
| 4 | 2 |
| 4 | 3 |
| 5 | 1 |
| 5 | 2 |
| 5 | 3 |
| 6 | 1 |
| 6 | 2 |
| 7 | 1 |
For all other combinations of 220V AC and 110V AC PSUs, ExtremeXOS maximizes system power by enabling all PSUs and budgeting each PSU at 110V AC.
BlackDiamond 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.
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