1.4 Operational Procedures for Exalogic Machines

1.4.1 Non-emergency Power Procedure

Compute nodes and controllers in the storage device are powered on by either pressing the power button on the front of the machine, or by logging in to the ILOM interface and applying power to the system.

Compute nodes and controllers can also be powered off by using operating system commands.

For example, you can use the following command on the Oracle Linux operating system:

shutdown -h -y now

On the Oracle Solaris operating system, you can use the following command:

shutdown -i 5 now

Note:

You can use this command after logging in to the compute nodes.

The network switches do not have power switches. They power off when power is removed, by way of the PDU or at the breaker in the data center.

1.4.1.1 Power On Sequence

The power on sequence is as follows:

  1. Rack, including switches.

    Ensure that the switches have had power applied for a few minutes to complete power-on configuration before starting the storage controllers and compute nodes.

  2. Storage server heads attached to the chassis of the storage device.

    Wait for a few minutes for the storage appliance to boot and start NFS services and daemons.

  3. Compute nodes.

Note:

After power is applied, the LEDs on all compute nodes and storage server heads will start blinking after a few minutes. From the rear of the rack, you can see the green LEDs on the PSUs turn on instantly after power is applied. In addition, from the rear of the rack, you can see the display on the PDUs that lights up once power is available.

1.4.1.2 Power Off Sequence

The power off sequence is as follows:

  1. Compute nodes

    Note:

    Once the compute nodes are down, you can proceed to shut down the storage appliance.

  2. Storage server heads attached to the chassis of the storage device

  3. Rack, including switches

1.4.2 Emergency Power-off Considerations

If there is an emergency, then power to the Exalogic machine should be halted immediately. The following emergencies may require powering off the Exalogic machine:

  • Natural disasters such as earthquake, flood, hurricane, tornado or cyclone.

  • Abnormal noise, smell or smoke coming from the machine.

  • Threat to human safety.

1.4.2.1 Emergency Power-off Procedure

To perform an emergency power-off procedure for the Exalogic machine, turn off power at the circuit breaker or pull the emergency power-off switch in the computer room. After the emergency, contact Oracle Support Services to restore power to the machine.

1.4.2.2 Emergency Power-off Switch

Emergency power-off (EPO) switches are required when computer equipment contains batteries capable of supplying more than 750 volt-amperes for more than five minutes. Systems that have these batteries include internal EPO hardware for connection to a site EPO switch or relay. Use of the EPO switch will remove power from the Exalogic machine.

1.4.3 Cautions and Warnings

The following cautions and warnings apply to Exalogic machines:

  • Do not touch the parts of this product that use high-voltage power. Touching them might result in serious injury.

  • Do not power off Exalogic machines unless there is an emergency. In that case, follow the Emergency Power-off Procedure.

  • Keep the front and rear cabinet doors closed. Failure to do so might cause system failure or result in damage to hardware components.

  • Keep the top, front, and back of the cabinets clear to allow proper airflow and prevent overheating of components.

  • Use only the supplied hardware.