Installation and User's Guide

Completing the installation

After you install the hard disk drives and power supplies, follow the instructions in this section to complete the installation. Instructions for installing the identification labels and cabling the storage unit are included.

Installing identification labels

Your storage unit comes with one sheet of 10 labels (0-9) and one sheet of 4 labels (SCSI ID) labels.

Complete the following steps to install the SCSI identification labels:

To install the label:

1. Locate the SCSI ID label for your configuration. Use the single-bus label as illustrated below.
   1. Orient the label so that the printed numbers are legible from left-to-right.
   2. Peel the backing away from the adhesive side of the label.
   3. Carefully butt the edge of the SCSI ID label up against the edge of the serial number label so that the 14 printed ID numbers are located beneath each of the drive bays.
   4. Apply the label to the front of the unit, as shown in the following illustration.
   Single-bus configuration
   
   
2. Install the storage unit ID label.
3. Verify the setting of the storage unit number switch (0-9).
4. Apply the storage unit ID label that matches the setting for the unit ID switch in the blank label area directly to the left of the SCSI ID label.
5. Continue with "Cabling the storage unit".

Cabling the storage unit

This section provides the SCSI and power cabling information. After you attach your SCSI and power cables, use the instructions provided in "Switching the storage unit on and off", for the initial startup of the storage unit.

SCSI cabling information

The storage unit comes with two ESM boards. There are two 68-pin SCSI Very High Density Connector Interface (VHDCI) connectors. From left to right as seen from the back, these connectors are for SCSI bus 2 and SCSI bus 1. See "Rear controls, indicators, and connectors", for the location of these connectors.

Note:

Connect only the SCSI bus 1 (right side) connector to the 5194-22S. SCSI bus 2 (left side) is not used.

SCSI cable restriction

The SCSI controller inside your server must have a dedicated SCSI channel for the storage unit. If an external channel is being used for the storage unit, its corresponding internal channel must not be used for other devices.

Power cabling

The storage unit uses two or four power cords, depending on your country. You can connect the power cords to a primary power unit inside the rack, such as a properly grounded ac distribution unit or uninterruptible power supply (UPS), or to an external source, such as a properly grounded electrical outlet.

Attach the power supply power cords as follows:

1. Connect the power cord to the power supply.
2. Plug the power supply cord into a properly grounded electrical outlet.
3. Go to "Switching the storage unit on and off" below for information about the initial startup of the storage unit.