On rare occasions, when power cycling batches of blade nodes by either individually issuing a power-on command using ipmitool or /start/ SYS, or when powering on a Sun Blade 6048 Modular System chassis with a rack full of blades, a node might fail to power on. The failed node will return an OFF status when an IPMI power status query is made.
If you encounter this issue, try the following:
Login to the node’s service processor and reset the service processor.
If the above doesn’t work, remove and reinsert the blade in the chassis.