Sun Microsystems A3500 2.2.2 Power Connections

Chapter 2 StorEdge A3500 Configurations 2-13

2.2.2 Power Connections

Because the controller module must receive power after the disk arrays, connect the

disk arrays to the firststage of the power sequencer and the controller module to the

second. Twoexamples are shown below.

FIGURE2-13 One A3000 Controller Module and TwoD1000 Disk Arrays (Power)

FIGURE2-14 TwoD1000 Disk Arrays and One A3000 Controller Module (Power)

R1&R2 R3

Front

sequencer

L1&L2 L3

Rear

sequencer

L1

L2

L3

R1

R2

R3

Rear view

R6 R4

R5

Front

sequencer

L6 L4

L5

Rear

sequencer

L4

L5

L6

R5

R4

Rear view

R6

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.