Sun Microsystems A3500 1.1 Configuration Guidelines

1-2 Sun StorEdge A3500 Hardware Configuration Guide • September 1998

1.1 Configuration Guidelines

Use the following guidelines for installing and cabling or reconfiguring your system.

■Do not exceed a SCSI bus length of 25 meters.

■Make sure that the last Sun StorEdge A3000 controller module in any daisy chain

has a total of two terminators, one in each SCSI OUT port.

■If you areadding a controller module to an already existing configuration, halt all

activity on the SCSI bus before removing any SCSI cables.

■Once you finish cabling the devices and powering on, reboot the system by

typing boot -r at the ok prompt before beginning any SCSI bus activity.

Performa system check to make sure that SCSI connections are secure. Look for fault

LEDs on the hardware or error messages in the RAID Manager GUI.

Note – Refer to your server and rack documentation for instructions on grounding

the StorEdge A3500 cabinet.

Contents

Main Page Contents Page Preface Using UNIX Commands Typographic Conventions Shell Prompts AaBbCc123 Page Page Host Connections 1.1 Configuration Guidelines Note Page 1.2.2 Daisy Chain Note Page Page 1.3 Ultra 2 Host SystemPower Connection Requirement Caution Page StorEdge A3500 Configurations 2.1 StorEdge D1000 Disk Array Settings 2.1.1 1x2 Configuration 2.1.1.1 Option Switch 2.1.1.2 Module ID Switch Note 2.1.1.3 SCSI Jumper Cables and Terminators 2.1.2 1x5 Configuration 2.1.2.1 Option Switch 2.1.2.2 Module ID Switch 2.1.2.3 SCSI Jumper Cables and Terminators 2.1.3 2x7 Configuration 2.1.3.1 Option Switch 2.1.3.2 Module ID Switch 2.1.3.3 SCSI Jumper Cables and Terminators 2.1.4 3x15 Configuration 2.1.4.1 Option Switch 2.1.4.2 Module ID Switch Ensure that the module IDs for the StorEdge D1000 disk arrays are set accordingto 2.1.4.3 SCSI Jumper Cables and Terminators 2.2 1x2 Cabling 2.2.1 SCSI Cabling 2.2.1.1 Cable Lengths 2.2.1.2 SCSI Connections 2.2.2 Power Connections 2.3 1x5 Cabling 2.3.1 SCSI Cabling 2.3.1.1 Cable Lengths 2.3.1.2 SCSI Connections 2.3.2 Power Connections 2.4 2x7 Cabling 2.4.1 SCSI Cabling 2.4.1.1 Cable Lengths 2.4.1.2 SCSI Connections 2.4.2 Power Connections Page 2.5.1 SCSI Cabling 2.5.1.1 Cable Lengths 2.5.1.2 SCSI Connections for Controller Module A 2.5.1.3 SCSI Connections for Controller Module B 2.5.1.4 SCSI Connections for Controller Module C 2.5.2 Power Connections 2.5.2.1 Power Sequencer Interconnections 2.5.3 Connecting to AC Power Source Caution 2.5.4 Power Connections The power connections for the 1x8 cabinet are shown in FIGURE2-25.