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Chapter 4: Subsystem Connection and Operation

Subsystem Connection and Operation 4-13

4.4 Host Connection Sample Topologies

4.4.1 Simple, Direct Connection to Host Computers

The subsystem is directly connected to two application servers. Each server is

equipped with two HBA cards.

Figure 4-6: Direct-attached Clustered Servers Connections – Hub Disabled

Note that if a logical drive is associated with both an AID and a BID, logical

drive’s performance may not be as good as those associated with two AIDs or

two BIDs. A logical drive is managed by Controller A if it is associated with

AIDs.

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Galaxy RAID 1
Installation and Hardware 1
Reference Manual 1
Contact Information 2
Warnings and Certifications 4
Table of Contents 7
Safety Precautions 11
About This Manual 12
Revision History 12
Who should read this manual? 12
Related Documentation 12
Conventions 13
CAUTION! 13
IMPORTANT! 13
Chapter 1 16
Introduction 16
1.1.1 Enclosure Chassis 17
1.1.1.1 Chassis Overview 17
1.1.1.2 Physical Dimensions 18
1.1.1.4 Drive Slot Numbering 19
1.1.1.5 Rear Panel Overview 20
1.2. Subsystem Components 21
1.2.2 Drive Trays 22
1.2.3 RAID Controller Module 22
1.2.5 DIMM Module 24
1.2.6 BBU Module 24
1.2.7 Power Supply Units 25
Figure 1-11: PSU Module 26
1.2.8 Cooling Modules 27
1.2.9 Enclosure DIP Switches 28
1.3. Subsystem Monitoring 29
1.4.3 Normalized Airflow 31
Chapter 2 33
Hardware Installation 33
 Back-end PCBs 37
2.7.2 Installation Steps 44
2.10.1 Component Description 53
Chapter 3 57
Subsystem Monitoring 57
3.2. Status-indicating LEDs 58
3.2.1.1 Fibre Port LEDs 59
3.2.1.2 Restore Default LED 59
3.2.2 LAN Port LEDs 60
3.2.3 LCD Keypad Panel 60
System Monitoring 61
3.2.4 Drive Tray LEDs 62
3.2.5 BBU Module LED 63
3.2.6 PSU Module LED 64
3.2.7 Cooling Module LED 65
3.3. Audible Alarm 66
C Monitoring 67
Chapter 4 68
Connection and Operation 68
4.1.2 FC Lasers 69
4.1.4 SFP Transceivers 69
Considerations 70
4.2.3 Host-side Topologies 72
4.2.4 Drive-side Topologies 72
4.2.5 Internal Connections 72
4.2.6 Unique Identifier 73
4.2.7 ID/LUN Mapping 73
4.3 Fibre Channels 74
IMPORTANT: 76
Channel Settings 81
Tolerance 82
Configuration Information 83
4.4.4 Expansion Links 88
4.5 Power On 89
4.5.2 Power On Procedure 90
4.5.3 Power On Status Check 91
4.5.4 LCD Screen 93
GHDX2-24 93
4.6 Power Off Procedure 94
Chapter 5 96
Subsystem Maintenance 96
5-2 Subsystem Maintenance 97
5-1: Removing the BBU Module 100
5-5: Removing the BBU Module 104
5-6: Removing the Power Cord 106
5-8: Dislodging the PSU 107
WARNING! 109
5.6. Drive Tray Maintenance 110
Appendix A 113
Subsystem Specifications 113
A.6. RAID Management 117
Specifications A-7 119
Appendix B 120
Spare Parts and Accessories 120
Appendix C 123
Pinouts 123
C.2. COM1 Serial Port Cable 125
Appendix C Pinouts 127
Pinouts C-5 127
C.5. Null Modem 128
C.6. Ethernet Port Pinouts 129
C.7. Power Socket 129

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