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Galaxy GHDX-2422S-8+12F4D Installation and Hardware Reference Manual
FC Host Connection Prerequisites
4-2
Laser types: Two (2) types of laser devices can be used in FC cables: Optical Fibre
Control (OFC) and non-OFC lasers. The OFC lasers are high-powered and can be used
over long distances.
Safety features: Due to their high power output, OFC lasers usually come with a safety
mechanism that switches the laser off as soon as it is unplugged. Non-OFC lasers are low
power and do not come with these safety features; however, they can still inflict damage.
4.1.3 SFP Transceivers
On the subsystem’s host ports, electric signals are converted by SFP transceivers into
laser light pulses. FC cables connect the subsystem’s host ports through SFP
transceivers. These transceivers should typically have at least 4Gbps bi-directional data
links, a laser transmitter (for fiber optic cables), an LC-type connector, compatibility with
multi-mode cables, and a metal enclosure to lower the EMI.
NOTE:
LC connectors are small form-factor, fiber-optic connectors based on a 1.25-mm
ceramic ferrule with the latching mechanisms of modular plug and jack.
Other beneficial features for a typical SFP transceiver include a single power supply, low
power dissipation, and hot-swap capability. It is also important that any transceiver you
use meets the FC performance and reliability specifications.
NOTE:
SFP modules must be purchased separately. A variety of FC cables and transceivers
can be used. Please purchase the correct SFP modules from your subsystem
vendor/distributor and contact them for the latest list of certified modules.
4.1.4 Fibre Channel Topologies
The Fibre Channel Standard has been designed to support Fibre Channel arbitrated loop
(FC-AL).
♦ FC-AL: This is the most common topology currently in use. Fibre Channel devices
are all connected in a loop. Each device is assigned an arbitrated loop physical
address (AL_PA). The FC-AL supports 127 devices in a single loop.
All GHDX-2422S-8F4D and GHDX-2422S-12F4D subsystems support the above
topology.
- Galaxy Raid 1
- Installation and Hardware 1
- Reference Manual 1
- Contact Information 2
- Copyright 2006 3
- Warnings and Certifications 4
- (Certified Worldwide) 5
- CNS 13438 (for Taiwan) 5
- Table of Contents 6
- APPENDIX A SPECIFICATIONS 8
- APPENDIX C PINOUTS 8
- Safety Precautions 9
- About This Manual 9
- Revision History 10
- Who should read this manual? 10
- Conventions 10
- Warnings 11
- Cautions 11
- Chapter 1 13
- Introduction 13
- 1.1.2 Model Variations 14
- 1.1.3 Enclosure Chassis 14
- 1.1.3.1 Chassis Overview 14
- CAUTION! 16
- 1.1.3.2 Physical Dimensions 16
- 1.1.3.5 Rear Panel Overview 18
- 1.2. Subsystem Components 19
- WARNING! 21
- DIMM Module 23
- 1.2.4 Optional BBU Module 23
- 1.2.5 Power Supply Units 24
- 1.3. Subsystem Monitoring 26
- 1.4.3 Normalized Airflow 28
- Chapter 2 29
- Hardware Installation 29
- 2.3 Safety Precautions 30
- 2.5 Unpacking the Subsystem 34
- 2.6 Installation Overview 35
- 2.7 Rackmounting 36
- Figure 2-4: Front Ear Holes 37
- 2.8 BBU Installation 38
- IMPORTANT! 39
- 2.9 Hard Drive Installation 40
- 2.9.3 Drive Installation 41
- 2.10 Drive Tray Installation 42
- Chapter 3 45
- Subsystem Monitoring 45
- 3.2 Status-indicating LEDs 47
- 3.2.3 LAN Port LEDs 49
- 3.2.4 LCD Keypad Panel 50
- 3.2.5 Drive Tray LEDs 51
- 3.2.6 PSU Module LED 51
- 3.2.7 Cooling Module LED 52
- 3.2.8 BBU Module LED 53
- 3.3 Audible Alarm 54
- C Monitoring 55
- This page is intentionally 56
- Chapter 4 57
- Subsystem Connection and 57
- Operation 57
- 4.1.3 SFP Transceivers 58
- 4.1.5 Points of Failure 59
- 4.2 Power On 62
- 4.2.3 Power On Enclosure 63
- 4.2.4 Power On Status Check 63
- 4.2.5 LCD Screen 64
- GALAXYHD 64
- 4.3 Power Off Procedure 65
- Subsystem Maintenance and 67
- Upgrading 67
- 5.2.1 Overview 69
- NOTE: 73
- 5.4. Replacing a Faulty BBU 74
- 5.7. Drive Tray Maintenance 81
- Appendix A 87
- Specifications 87
- Configuration 89
- Architecture 89
- A.6 RAID Management 91
- Appendix B 93
- Spare Parts and Accessories 93
- Controller Modules 94
- Accessories Overview 94
- Appendix C 97
- Pinouts 97
- C.3. GAL-9011 Null Modem 100
- C.4. Ethernet Port Pinouts 100
- C.5. Main Power 100
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