Monitoring Chassis Power
Chassis and Power Supplies
page 2-22
OmniSwitch 7700/7800 Hardware Users Guide
April 2005
Example 2: Inadequate Power to Remove a Power Supply
1
Enter the
show chassis
command. A screen similar to the following displays:
-> show chassis
Model Name: OS7700,
Description: OS7700,
Part Number: 901748-ÿÿÿ
Hardware Revision: 202,
Serial Number: 1467014A,
Manufacture Date: NOV 16 2001,
Admin Status: POWER ON,
Operational Status: UP,
Free Slots: 9,
Power Left: 400,
Number Of Resets: 2
In this example, the “Power Left” field displays 400 unused watts. If one power supply is disabled, the
switch’s power budget will be exceeded by
at least 80 watts
(400 – 480 = – 80). If a power supply is shut
off or removed for any reason, the switch will automatically power down NI modules until the power
budget shortfall has been corrected.
Adding a Power Supply
You can add a power supply to the chassis at any time without disturbing the switch’s network functions.
You are not required to power down the switch.
Hot Swapping a Power Supply
Hot swapping a power supply refers to the action of
replacing
a power supply while the switch is operat-
ing. To hot swap a power supply without disrupting switch operations, you must first have power supply
redundancy. Otherwise, switch operations may be disrupted.
Permanently Removing a Power Supply
If you plan to permanently remove a power supply from the chassis while the switch is operating, verify
that you have effective power supply redundancy before doing so. Otherwise, switch operations may be
disrupted.
Additional Information.
For instructions on installing and removing power supplies, refer to pages
through
. For information on power supply redundancy, refer to
