Extreme Networks BlackDiamond 8800 Series - Manual (Page 88)

Installing Power Supply Units in the BlackDiamond 8800 Series Switches
BlackDiamond 8800 Series Switches Hardware Installation Guide 88
WARNING!
Extreme Networks AC PSUs do not have switches for turning the unit on and off. Remove the wall plug from the
electrical outlet to disconnect the power to an Extreme Networks AC PSU. Make sure that this connection is easily
accessible.
When the PSU is outside the chassis (not installed), do not plug the PSU into an electrical outlet. Plugging an
uninstalled AC PSU into an electrical outlet exposes you to a hazardous energy and is a potential fire hazard.
WARNING!
Extreme Networks DC PSUs do not have switches for turning the unit on and off. Make sure that the DC circuit is
de-energized before connecting or disconnecting the DC power cord at the DC power socket on an Extreme Networks
DC PSU.
PSU Compatibility
The BlackDiamond power supply units are intended for use in specific BlackDiamond switches.
Table 14 lists the BlackDiamond 8800 series switches and their compatible power supply units.
Combining Different AC PSU Models
When 600/900 W AC PSUs and 700/1200 W AC PSUs are combined in the same BlackDiamond 8806
chassis and are powered on, all PSUs will be budgeted down to the lower-powered 600/900 W AC
output values to avoid PSU shutdown due to over-current.
ExtremeXOS optimizes total system power, avoiding the possibility of over-current, by deciding
whether to budget down PSUs with 220 V AC inputs when PSUs with 110 V AC inputs are present, or
to keep 110 V AC PSUs disabled.
CAUTION
Even though this process avoids the possibility of over-current, an I/O module may be powered off if a 600/900 W
AC PSU is added to a BlackDiamond 8806 system running in the following configuration:
● The system is powered by three 700/1200 W AC PSUs at 220 V AC.
● The system includes four or more PoE I/O modules with a PoE power requirement that falls between 2391 W
and 2438 W of inline power.
Table 14: PSU Compatibility in BlackDiamond 8800 Series Switches
BlackDiamond Switch Compatible PSU Compatibility Notes
BlackDiamond 8806 600W/900W AC PSU
AND/OR
700W/1200W AC PSU
OR
1200W DC PSU The 700/1200 W AC PSU and the 600/900 W AC PSU
can be used together in the same BlackDiamond 8806
system only.
Extreme Networks does not recommended using the
600/900 W AC PSU or the 700/1200 W AC PSU in
combination with a 1200W DC PSU.
BlackDiamond 8810 700W/1200W AC PSU
OR
1200W DC PSU Extreme Networks does not recommended using the
700/1200 W AC PSU in combination with a
1200W DC PSU.