Installing a Rack-Mounted Array System

C H A P T E R 2

This chapter describes power-on procedures for a fully-assembled and cabled array system.

If you purchased independent array components, go to Installing and Cabling Rack-Ready Trays for installation instructions.

This chapter includes the following sections:

Installation Checklist

Before Powering On the Array

Connecting the Power Cables

Powering On the Array

Next Steps

Installation Checklist

The following checklist (TABLE 2-1) outlines all of the tasks required for installing a fully-racked array. To ensure a successful installation, perform the tasks in the order in which they are presented.

TABLE 2-1 Sun Storage 6580 and 6780 Arrays Installation Checklist
Step	Task	Where to Find Procedure
	Prepare the site.	Sun Storage Regulatory and Safety Compliance Manual Site Preparation Guide for Sun Storage 6580 and 6780 Arrays
	Check for late-breaking information related to the installation of the array.	Release Notes for Sun Storage 6580 and 6780 Arrays
	Unpack the array and move it into position.	Unpacking guide attached to the outside of the shipping carton
	Attach the power cables to the power source.	Connecting the Power Cables
	Attach the host interface cables.	Connecting Data Hosts
	Connect the management host.	Connecting the Management Host
	Turn on the power.	Powering On the Array
	Configure IP addresses for the array controllers.	Configuring the IP Address of the Array Controllers
	Install CAM management software on data hosts	Sun StorageTek Common Array Manager Software Installation Guide

Before Powering On the Array

You can set up a Dynamic Host Configuration Protocol (DHCP) server to issue the IP address for each controller. If a DHCP server is not available, the controller tray defaults to internal static IP addresses. See Configuring the IP Address of the Array Controllers for details.

For instructions on how to set up the DHCP server, see Configuring a DHCP Server.

Connecting the Power Cables

1. Verify that both power switches are off for each tray in the rack.

2. Connect each power supply in the tray to a different power source in the rack.

3. Connect the power cables from the rack to the external power source.

FIGURE 2-1 Connecting the Power Cables to the Controller Tray

Illustration showing the location of power connectors at the back of a controller tray.

Figure Legend
1	Power connector for Controller A
2	Power connector for Controller B

FIGURE 2-2 Power Connections for 1x13 Array Configuration

Illustration showing power cabling from array to PDU.

Figure Legend
1	Power distribution Unit (PDU) B	3	Controller tray power connector A
2	PDU A	4	Controller tray power connector B

Verifying the Link Rate for Each Tray

The Tray Link Rate switch (FIGURE 2-3) on each expansion tray is preset to operate at 2 Gbits/second or 4 Gbits/second.

If you added an expansion tray to a factory-assembled array, set the tray link rate as described in Setting the Tray Link Rate.

FIGURE 2-3 Expansion Tray Link Rate Switch

Figure showing the location of the link rate switch.

Figure Legend
1	Tray Link Rate switch, Left = 4 Gbits/second, Right = 2 Gbits/second

If the drive speed of the drives in an expansion tray are all 4 Gbits/second drives, the Tray Link Rate switch is set to the left position (4 Gb/s).

If the drive speed of the drives in an expansion tray are all 2 Gbits/second, the Tray Link Rate switch is set to the right position.

If an expansion tray drive has mixed drive speeds, the expansion tray setting is set at the lowest drive speed rate.

Note - The Tray Link Rate switch does not affect the data rate of host ports.

Powering On the Array

Use this procedure to turn power on for all trays installed in the rack.

Note - The order in which you power on the trays is important. Be sure to power on the controller tray last in order to ensure that the disks in the expansion trays have enough time to spin completely before being scanned by the redundant array of independent disks (RAID) controllers in the controller tray.

1. Turn on the rack circuit breakers, if applicable.

2. Turn on the two power switches at the back of each expansion tray (see Expansion Tray).

Wait until the tray ID/Diag display on the back indicates the number of the tray ID to be sure that the tray has powered up fully before proceeding to the next step.

3. Turn on the two power switches at the back of the controller tray (see Expansion Tray).

While the tray powers on, the green and amber LEDs at the front and back of the controller tray turn on and off intermittently. Depending on your configuration, it can take several minutes for the tray to power on. Wait at least two minutes until all of the drives are spinning completely before moving to step 4. When the power-on sequence is complete, the controller tray ID indicates 99.

4. Check the status of each tray.

After the power-on sequence is complete, confirm that the green OK/Power LEDs are steady green, both on the tray and on each drive in the tray.

If all tray and drive OK/Power LEDs are steady green and the amber Service Required LEDs are off, the power-on sequence is complete and no faults have been detected.

Note - The array rarely needs to be powered off. For power-off instructions, see Powering Off the Array.

Next Steps

Now you are ready to connect the management host and data hosts, as described in Chapter 3.