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Sun Storage J4500 Array System Overview
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Document Information

Preface

1.  Hardware Overview

Overview of the Sun Storage J4500 Array

Features

Exterior Features, Controls, and Indicators

Front Panel

Back Panel

Supported Server Platforms

Supported Host Bus Adapters

Installation Overview

Sun Storage J4500 Array Rack Slide Rails

Compatible Racks

Tools and Staff Required

Configuration and Cabling

Term Definitions

Configuration Rules

Cabling the SAS Connectors

Example Configurations

Powering On and Off the Array

To Power On the Array

To Place the Array Into Standby Power Mode

To Power Off the Array

AC Power Failure Auto-Recovery

2.  Software Overview

Operating System Support

Updated Driver Files Required for Windows

Clustering Software Not Supported With the J4500 Array

Array Management Overview

Management Term Definitions

About Enclosure Management

Array Management Options

Management Options When Using the StorageTek SAS RAID External HBA (Adaptec-Based)

Management Options When Using the StorageTek SAS External HBA (LSI-Based)

Using the Common Array Manager Software

Viewing Sun Storage J4500 Array Information With CAM

Problem Resolution

Zoning Array Storage Resources Using CAM

Upgrading Sun Storage J4500 Array Firmware Using CAM

Obtaining CAM Software

Using the StorageTek RAID Manager Software

Viewing Sun Storage J4500 Array Information With the Sun StorageTek RAID Manager

3.  Adding and Zoning Array Storage Using CAM

Overview of Zoning

System Requirements

Access Configuration (Zoning) Guidelines

Adding (Cascading) a J4500 Array to An Existing Zoned J4500 Array

To Prepare an Existing Array Prior to Cascading Additional Storage

To Prepare a New J4500 Array for Cascading

To Cascade Arrays Using CAM

Configuring Multiple Host Access for a J4500 Array

To Configure Multiple Host Access for a J4500 Array

4.  SAS Multipathing

System Requirements

Supported Sun Storage J4500 Array Firmware and Common Array Manager (CAM) Software

Supported HBAs

Supported Operating Systems and Drivers

Supported Drives for Multipath

Multipathing Configuration Guidelines

Configuration Examples

Multipathing With One Host, One HBA and One Array

Multipathing With One Host, One HBA and Cascaded Arrays

Multipathing With One Host, Two HBAs and Cascaded Arrays

Multipathing With Two Hosts, Four HBAs and Cascaded Arrays

Multipathing With Two Hosts, Multiple HBAs and Cascaded Arrays

Enabling and Disabling Multipathing in the Solaris Operating System

About Multipathing

stmsboot Options

stmsboot Conditions

To Enable Multipathing on LSI-Based Multipath-Capable Controllers

To Disable Multipathing on LSI-Based Multipath-Capable Controllers

Configuring Multipathing on Selected Ports

Enabling and Disabling Multipathing in the Linux Operating System

About Multipathing

To Enable Multipathing in Linux

To Disable Multipathing in Linux

Enabling and Disabling Multipathing in the Windows Operating System

About Multipathing

How a Failover is Handled by Windows

To Enable Multipathing in Windows Server 2008

To Disable Multipathing in Windows Server 2008

5.  Troubleshooting

CAM Service Advisor

To Access Service Advisor Procedures

Taking Electrostatic Discharge (ESD) Precautions

To Reserve the Array for Maintenance

To Release the Array After Maintenance

Understanding the CAM Event Log

Troubleshooting Problems with the Array

Initial Start-up

Check the Event and Performance Logs

Identifying Disks in the Array Enclosure

Using the Array Management Software to Monitor Enclosure Health

Array Link Problems

Switching SAS Cables or Making New Connections

Disks Problems

To Replace a Disk

Guidelines for Removal and Replacement of RAID Storage

Persistent Affiliation When Changing HBAs

If You Do Not See All of the 48 Disks

Array Environment Problems

Power Problems

Resetting the Enclosure Hardware

To Reset the Enclosure Hardware Using the Reset Button

Clearing the Enclosure Zoning Password

To Clear the Enclosure Zoning Password

Index

Clearing the Enclosure Zoning Password

When creating storage zones on your J4500 array, use the Common Array Manager (CAM). CAM allows you to set a zoning password for each of the array's SAS domains (each domain equates to one of the array's SAS fabrics: A or B). The zoning passwords are stored in the array expanders and in CAM, and are used to prevent unauthorized changes to storage zones. If the array's zoning password is ever forgotten, or becomes corrupt, it can be cleared using the enclosure zoning password clear button on the back of the J4500 array.


Note - Using the enclosure zoning password clear button clears the zoning password for both of the J4500 array's SAS domains. It does not clear zoning configurations.


After clearing the zoning password on the array enclosure, you will also need to clear the zoning password for each of the array's SAS domains stored in CAM. This can be done from the CAM management host. Once the password is cleared in both places, you can use CAM to assign a new password to each of the array's SAS domains.


Note - Clearing the password in both places is important to ensure the passwords stored in the array and in CAM match. Some CAM array maintenance operations use the enclosure zone password during execution to ensure the action is authorized.


To Clear the Enclosure Zoning Password

Clearing the enclosure zoning password is done by pressing a recessed button at the rear of the array. This operation may be performed with the enclosure running.

  1. At the back of the J4500 array, locate the Enclosure Zoning Password Clear button access hole (see Enclosure Zoning Password Clear Button ).
  2. Using a paper clip, press and hold the recessed button on the back panel for five seconds and then release.

    The enclosure zoning password for both SAS fabrics (A and B) is cleared.


    Figure 5-2 Enclosure Zoning Password Clear Button

    image:This graphic shows the location of the Zoning Password Clear button.

    Figure Legend

    1 Enclosure Zoning Password Clear button

  3. From the CAM management host, select Clear password from the Administration page and save the setting for both of the array's SAS domains.

    Once that is done, you can assign new zoning passwords using CAM.