Dell POWEREDGE M1000E - Manual (Page 907)

Fabric OS Command Reference 879
53-1002746-01
powerOffListShow
2
powerOffListShow
Displays the order in which slots are powered off.
SYNOPSIS powerofflistshow
DESCRIPTION Use this command to display the order in which the physical slots are powered off.
Whenever a power supply goes out of service or a field-replaceable unit (FRU) is inserted, the system's
available power is compared to the system's required power to determine if there is enough power to
operate. If less than the required power is available, the power-off list is processed, until there is
sufficient power for the system to operate.
The following rules apply when the power-off list is processed:
•
If a power supply starts predicting failure, so that there will not be enough power for all blades, the
powered-up port blades are powered down in the order in which they appear on the power-off list.
•
If you replace a failed power supply, or you remedy an existing power-supply shortage by inserting a
new power supply, the previously powered-down blades are powered up in the reverse order of the
power-on list. Note that this is different from the order in which the blades in the system usually
come up. The original powering up of blades does not consult the power-off-list; it simply proceeds
from the lower-numbered slots to the higher-numbered slots.
•
If you add a new blade to the chassis, and there is not enough power available to operate the
additional hardware (because you may only have one power supply) the newly inserted blade will be
denied power and the existing powered-on blades stay powered on.
•
If the system's power supply drops abruptly to insufficient levels, the power-off list cannot be
processed. The sudden lack of power causes the CP board processors to cease executing the
firmware. For example, if only two power supplies are available to power a fully loaded chassis that
requires at least two power supplies, and one power supply is removed from the chassis, all system
operations terminate immediately, and the power-off list cannot be processed. However, if the
system is running on two power supplies (this is not recommended in this case) and one goes into a
predicted fail state (in which the power supply is still supplying power), the power-off list is processed
as described.
NOTES Command output may vary depending on the hardware platform.
Control processor (CP) blades are not included in the power-off list.
The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in
place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for
details.
OPERANDS None
EXAMPLES To display the slot power off list order:
switch:admin> powerofflistshow
Slot 10 will be powered off 1st
Slot 9 will be powered off 2nd
Slot 8 will be powered off 3rd
Slot 7 will be powered off 4th
Slot 6 will be powered off 5th