Troubleshooting guide

Software tools and solutions 73
For more information, go to the HP website (http://www.hp.com/go/hpsc) and click on Drivers, Software
& Firmware. Then, enter your product name in the Find an HP product field and click Go.
iLO and iLO 2 technology
The iLO subsystem is a standard component of selected ProLiant servers that provides server health and
remote server manageability. The iLO or iLO 2 subsystem includes an intelligent microprocessor, secure
memory, and a dedicated network interface. This design makes iLO or iLO 2 independent of the host server
and its operating system. The iLO or iLO 2 subsystem provides remote access to any authorized network
client, sends alerts, and provides other server management functions.
Using iLO or iLO 2, you can:
• Remotely power up, power down, or reboot the host server.
• Send alerts from iLO or iLO 2 regardless of the state of the host server.
• Access advanced troubleshooting features through the iLO or iLO 2 interface.
• Diagnose iLO or iLO 2 using HP SIM through a web browser and SNMP alerting.
For more information about iLO or iLO 2 features (which may require an iLO Advanced Pack or iLO
Advanced for BladeSystem license), see the iLO or iLO 2 documentation on the Documentation CD or on the
HP website (http://www.hp.com/servers/lights-out).
iLO 3 technology
The iLO 3 subsystem is a standard component of selected ProLiant servers that provides server health and
remote server manageability. The iLO 3 subsystem includes an intelligent microprocessor, secure memory,
and a dedicated network interface. This design makes iLO 3 independent of the host server and its operating
system.
In addition to remote management features, iLO 3 is also responsible for managing the health of the ProLiant
server. The intelligence of iLO 3 manages the Sea of Sensors thermal control, directs power management
functions, and monitors the health of server components.
The iLO 3 subsystem provides secure remote access from any authorized network client. The enhancements
to iLO 3 enable customers to get work done faster by providing turbo-charged remote access performance,
a streamlined user experience, and enhanced standards support.
Using iLO 3, you can do the following:
• Access a high-performance and secure Remote Console to the server from anywhere in the world.
• Use the shared iLO 3 Remote Console to collaborate with up to six server administrators.
• Remotely mount high-performance Virtual Media devices to the server.
• Securely and remotely control the power state of the managed server.
• Send alerts from iLO 3 regardless of the state of the host server.
• Access advanced troubleshooting features through the iLO 3 interface.
For more information about iLO 3 features (which may require an iLO Advanced Pack or iLO Advanced for
BladeSystem license), see the iLO 3 documentation on the Documentation CD or on the HP website
(http://www.hp.com/go/ilo).