IBM DS4700 Cabling the ac power supply for ac models, Cabling the dc power supply for dc models

Attach fiber-optic interface cables to each host adapter. You will connect the other end of the cables to the controller later in the installation process. For more information about handling fiber-optic cables, see “Handling fibre-optic cables” on page 57.

Cabling the ac power supply for ac models

Complete the following steps to connect the ac power supply cable:

1.Using the supplied strap, tie the power supply cord to the rail to provide strain relief for the power cord.

2.Connect the power cable to the power supply.

3.Plug the supplied power cable into a properly grounded electrical outlet. For maximum protection against power loss, connect each of the two power supplies to a different power source.

4.Continue with “Powering on the storage subsystem” on page 119 for the initial startup of the storage subsystem.

Cabling the dc power supply for dc models

Statement 29:

CAUTION:

This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment.

This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following conditions must be met:

vThis equipment shall be connected directly to the dc supply system earthing electrode conductor or to a bonding jumper from an earthing terminal bar or bus to which the dc supply system earthing electrode conductor is connected.

vThis equipment shall be located in the same immediate area (such as, adjacent cabinets) as any other equipment that has a connection between the earthed conductor of the same dc supply circuit and the earthing conductor, and also the point of earthing of the dc system. The dc system shall not be earthed elsewhere.

vThe dc supply source shall be located within the same premises as this equipment.

vSwitching or disconnecting devices shall not be in the earthed circuit conductor between the dc source and the point of connection of the earthing electrode conductor.

Statement 30:

Chapter 3. Cabling the storage subsystem 111