Sun Microsystems Sun Netra CP3250, User Manual

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2-18 Sun Netra CP3250 Blade Server User’s Guide • April 2009
2.3.3 Removing the Netra CP3250 Blade Server
1. Power off the Sun Netra CP3250 blade server.
Use the instructions in Section 2.3.2, “Powering Off the Netra CP3250 Blade
Server” on page 2-17 .
2. If installed, remove all cables from the front of the Sun Netra CP3250 blade
server.
3. Loosen the locking screws to release the blade server from the ATCA shelf.
4. When the blue Hot-Swap LED lights steadily, release the upper latch and the
lower latch at the same time to unseat the blade server from the connectors.
5. Remove the blade server from the ATCA shelf and place the blade server on an
antistatic mat.
2.3.4 Powering On the System
Sun Netra CP3250 blade servers are powered on automatically via the H8 BMC
when you install the blade server into a slot in the ATCA shelf. Once installed, the
blade server sequences through power-on states until it is fully powered on.
2.3.5 Automatic Power-Off Events
A power-off sequence is initiated either by a request from the shelf manager or a
fault condition. The Sun Netra CP3250 blade server shuts down to standby power
mode when the following upper critical threshold conditions are met:
■
Detection of DC input (both -48V A and -48V B) drop for more than 5ms
■
Processor thermal trip drops to standby mode
Thermal trip of DC brick turns off all local power (standby included)