Sun Microsystems A3500 manual Power Connections

Page 29

2.2.2Power Connections

Because the controller module must receive power after the disk arrays, connect the disk arrays to the first stage of the power sequencer and the controller module to the second. Two examples are shown below.

	Front
	sequencer
R3	R1&R2	R3
L3

L2			Rear
L2		R2	sequencer
		R2	sequencer
L1	Rear view	R1
		R1

L1&L2L3

FIGURE 2-13One A3000 Controller Module and Two D1000 Disk Arrays (Power)

L6

L5

Rear view

L4

R6R4

Front sequencer

R5

R6

L6L4

R5

Rear

sequencer

R4

L5

FIGURE 2-14Two D1000 Disk Arrays and One A3000 Controller Module (Power)

Chapter 2 StorEdge A3500 Configurations 2-13

Image 29

Contents Sun StorEdge A3500 Hardware Configuration Guide Page Contents Iv Sun StorEdge A3500 Hardware Configuration Guide September Preface Using Unix CommandsShell Prompts Typographic ConventionsTable P-1Typographic Conventions Table P-2Shell PromptsSun Documentation on the Web Related DocumentationSun Welcomes Your Comments Table P-3Related DocumentationPage Host Connections Configuration Guidelines Single Host Supported Host ConfigurationsDaisy Chain Independent Controller Multi-Initiator 4Two-Node Multi-Initiator Configuration5AC Power Sequencers-Ultra 2 Power Connector Ultra 2 Host System-Power Connection RequirementGain access to the AC power sequencers StorEdge A3500 Configurations Rear StorEdge D1000 Disk Array SettingsOption Switch 1 1x2 ConfigurationScsi Jumper Cables and Terminators Module ID Switch1x2 Module ID Switch Settings 51x5 Option Switch Settings for StorEdge D1000 Disk Array 2 1x5 Configuration11x5 Module ID Switch Settings 82x7 Option Switch Settings for StorEdge D1000 Disk Array 3 2x7 Configuration22x7 Module ID Switch Settings 43x15 Module ID Switch Settings 4 3x15 Configuration33x15 Module ID Switch Settings 10Sun StorEdge A3500 Hardware Configuration Guide September Scsi Cabling 1x2 CablingCable Lengths 5Controller Module a11One A3000 Controller Module and Two D1000 Disk Arrays Scsi Scsi ConnectionsPower Connections 6Controller Module a 1x5 CablingDifferential Scsi terminator Scsi jumper cable Rear view R6R4 Front sequencer R1&R2 Rear sequencer L1&L2 8Controller Module B 2x7 Cabling7Controller Module a Controller Module a Controller Module B Front Sequencer Rear 3x15 Cabling 11Controller Module C Controller Module a10Controller Module B 3x15 Controller Module a Scsi Connections for Controller Module a203x15 Controller Module B Scsi Connections for Controller Module B213x15 Controller Module C Scsi Connections for Controller Module CPower Sequencer Interconnections Connecting to AC Power Source2x71x8 Phase a Power connections for the 1x8 cabinet are shown in Figure 28Sun StorEdge A3500 Hardware Configuration Guide September