Sun™ Advanced Lights Out Manager (ALOM) is a system controller that lets you remotely manage and administer your server.
The ALOM software comes preinstalled on your host server. Therefore, ALOM works as soon as you install and power on the server. You can then customize ALOM to work with your particular installation.
ALOM enables you to monitor and control your server over a network, or by using a dedicated serial port for connection to a terminal or terminal server. ALOM provides a command-line interface that you can use to remotely administer geographically distributed or physically inaccessible machines.
In addition, ALOM enables you to run diagnostics (such as POST) remotely that would otherwise require physical proximity to the server's serial port. You can also configure ALOM to send email alerts of hardware failures, hardware warnings, and other events related to the server or to ALOM.
The ALOM circuitry runs independently of the server, using the server's standby power. Therefore, ALOM firmware and software continue to function when the server operating system goes offline or when the server is powered off.
Here are some components that ALOM can monitor.
| Component Monitored |
What ALOM Reveals |
|---|---|
| Disk drives |
Whether each slot has a drive present, and whether it reports OK status |
| Fans |
Whether a fan is present, fan speed, and whether the fans report OK status. |
| CPUs |
Whether a CPU is present, the temperature measured at the CPU, and any thermal warning or failure conditions |
| Power supplies |
Whether each bay has a power supply present, and whether it reports OK status |
| System enclosure temperature |
System ambient temperature, as well as any enclosure thermal warning or failure conditions |
| Circuit breakers and voltages | Whether circuit breakers have been tripped, and whether correct voltages are reported |
| Server front panel |
Operation mode switch position and status of LEDs |
| Voltages | Whether voltages are within operating range. |
| Alarm port |
Status of the alarm port |