IBM DS8000 manual Power outlet requirements, Input voltage requirements

Note: Use this switch only in extreme emergencies. Using this switch may result in data loss.

You can use the following power controls through the DS Storage Manager (running on the Management Console):

￿Local power control mode (visible in the DS Storage Manager)

￿Remote power control mode (visible in the DS Storage Manager)

If you select the Remote power control mode, you choose one of the following remote mode options:

–Remote Management Console, Manual: Your use of the DS Storage Manager power on/off page controls when the unit powers on and off.

–Remote Management Console, Scheduled: A schedule, which you set up, controls when the unit powers on and off.

–Remote Management Console, Auto: This setting applies only in situations in which input power is lost. In those situations, the unit powers on as soon as external power becomes available again.

–Remote Auto/Scheduled: A schedule, which you set up, controls when the unit powers on and off. A power on sequence is also initiated if the unit was powered off due to an external power loss during the time that the units are scheduled to be on and external power becomes available again.

–Remote zSeries Power Control: One or more attached zSeries units control the power on and power off sequences.

Planning requirements: If you choose the Remote zSeries Power Control options, you must have the remote zSeries power control feature. DS8000 feature code 1000 is needed in order to provide the necessary power sequence cables to connect to the zSeries processor.

Power outlet requirements

You must supply the following power outlets for the installation of your storage units:

￿Two independent power outlets for the two DS8000 power line cords are needed by each base model and expansion model.

Note: To eliminate a single point of failure, the outlets must be independent. This means that each outlet must use a separate power source and each power source must have its own wall circuit breaker.

￿Two outlets that are within 3.1 m (10 ft) of the external Storage Hardware Management Console (S-HMC). These outlets may be provided from Power Distribution Units in the rack or from an external power source.

Input voltage requirements

All power inputs are balanced three phase.

Due to different power requirements across the world, you must specify the nominal AC voltage (phase to phase) that is supported by the power supply that is installed on the model.

148DS8000 Series: Concepts and Architecture