Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)

Fabric OS Administrator’s Guide 37
53-1001336-02
Power conservation
2
FIGURE 3 Blade Swap with Virtual Fabrics after swap
Swapping blades
1. Connect to the director and log in using an account assigned to the admin role.
2. Enter the bladeSwap command.
If no errors are encountered, the blade swap will complete successfully. If errors are
encountered, the command is interrupted and the ports are set back to their original
configuration.
3. Once the command completes successfully, move the cables from the source blade to the
destination blade.
4. Enter the bladeEnable command on the destination blade to enable all user ports.
Power conservation
All blades are powered on by default when the switch chassis is powered on. Blades cannot be
powered off when POST or AP initialization is in progress.
To conserve power and ensure that more critical components are the least affected by a power
fluctuation, you can power off components in a specified order, using the powerOffListSet
command.
The available power is compared to the power demand to determine if there is enough power to
operate. If there is less power available than the demand, the power-off list is processed until there
is enough power for operation. By default, the processing proceeds from slot 1 to the last slot in the
chassis. As power becomes available, slots are powered up in the reverse order.
NOTE
Some FRUs in the chassis may use significant power, yet cannot be powered off through software.
For example, a missing blower FRU may change the power computation enough to affect how many
slots can be powered up.
The powerOffListShow command displays the power off order.