User guide

Powering on and off a CPU blade

There are four ways to power on and off the CPU blades installed on the blade enclosure. Power on

the video monitor and other connected devices and then power on the CPU blades in one of the

following ways. For information on the CPU blades, including their behavior after power-on and

checking the behavior, see the User's Guides and manuals of the CPU blades.

Note: Some CPU blades require different procedures, in which case the instructions in the

User's Guides of the CPU blades should be followed. Some CPU blades may not

support all the methods to power on/off described here. For details see the User's

Guides and manuals of the CPU blades.

Important

Before powering on a CPU blade, the EM card should be started whether the CPU

blade is started by its power switch or remotely. If you attempt to power on a CPU

blade before the EM card is started, the CPU blade may not be powered on. In this

case, check to see the EM card is started, and then power the CPU blade on by its

power switch.

Check

If the blade enclosure cord is connected to any power control system such as an

uninterruptible power supply (UPS) system, confirm that the power control system is

powered on.

Hint

 It will take a while to start up EM cards. By logging on to an EM card from a CLI and

checking the status of all the CPU blades on the blade enclosure by the SHOW SERVER

LIST command, you can see whether or not the EM card is started. There may be a CPU

blade status indication "unknown" or EM card not started up. For information on the SHOW

SERVER LIST command, see "Commands."

 To start up the OS from a peripheral device that is connected to a switch module or

pass-through card, such as storage, power-on should be done in the order starting from

peripheral device (storage), then the switch module/pass-through card, and then the CPU

blade. Confirm that a module is fully started before you power on the next module or device.