Each Server Module (blade) installed in the Sun Blade 8000 Series Chassis with ILOM firmware version 1.1.5 or later is required to request a Blade Power Ticket on boot. A Blade Power Ticket refers to the permission granted by the Chassis Monitoring Module (CMM) to the blade to power on.
If there is enough Available Power to power on the blade, the active CMM will grant the ticket and the service processor (SP) will enable power-on. If there is not enough Available Power present, the active CMM will deny the ticket and the SP will not allow the blade to power on. In both cases, the event is recorded in the CMM and SP event logs and an alert is sent out.
Blades with firmware earlier than version 1.1.5 power-on without requesting a Blade Power Ticket. For these blades, the CMM will detect the power-on attempt and will adjust the Blade Ticketed Power accordingly even if this amount of power results in a power Oversubscription condition. A message will be recorded in the event log of the CMM if the chassis experiences a power Oversubscription condition.
As a preemptive action to detect insufficient Available Power, you should monitor the power management metrics. For information about these metrics, see About Power Management Metrics. If a blade fails to power on, you should check the amount of Available Power.
See the following procedures for more information: