APC RAID Subsystem SCSI-SATA II Specifications download pdf (Page 58)

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Chapter 4 Subsystem Connection and Operation

4.2.2 Dual Application Servers

Figure 4-9: A Subsystem Connected to Clustered Servers

In the example shown in Figure 4-9, the SCSI ports are connected to clustered servers.

This provides both path and host computer redundancy. If one of the host channels

becomes disconnected, or if the cable connecting one of the host ports to the host

computer is damaged, the second path can transmit data from the subsystem to one of the

servers. Similarly, in the clustered configuration, the same array can be accessed through

different data paths and downtime will be minimized.

To obtain more disk capacity, the “OUT” ports are used to cascade another subsystem.

Connection Topology 4-7

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 99 100

Falcon 24 Bay 1
Table of Contents 2
Safety Precautions 6
About This Manual 7
Revision History 7
Who should read this manual? 7
Conventions 8
Software and Firmware Updates 9
Chapter 1 10
Introduction 10
1.1.2 Enclosure Chassis 11
1.1.2.1 Chassis Overview 11
CAUTION! 12
1.1.2.2 Physical Dimensions 12
1.1.2.3 Front Panel Overview 13
1.1.2.4 Drive Slot Numbering 14
1.1.2.5 Rear Panel Overview 14
1.2. Subsystem Components 15
1.2.2 Drive Trays 16
WARNING! 16
1.2.3 RAID Controller Module 17
1.2.5 DIMM Module 18
1.2.6 BBU Module 19
1.2.7 Power Supply Units 20
1.2.8 Cooling Modules 21
1.3. Subsystem Monitoring 22
1.4. Hot-swappable Components 23
1.4.3 Normalized Airflow 24
Chapter 2 25
Hardware Installation 25
2.3. Static-free Installation 26
2.5. Unpacking the Subsystem 28
Considerations: 29
WARNING! 30
2.7. Hard Drive Installation 34
2.8. Drive Tray Installation 35
Chapter 3 43
Subsystem Monitoring 43
3.2. Status-indicating LEDs 44
3.2.2 Controller Module LEDs 45
3.2.3 LAN Port LEDs 46
3.2.4 LCD Keypad Panel 46
3.2.5 Drive Tray LEDs 48
3.2.7 PSU Module LED 49
3.3. Audible Alarm 50
C Monitoring 51
Subsystem Connection and 52
Operation 52
4.1.3 SCSI Termination 53
4-5: LCD Keypad Navigation 55
4.2 Connection Topology 57
4.3 Power On 61
4.3.2 Power On Procedure 62
4.3.4 Power On Status Check 63
4.3.5 LCD Screen 64
4.4 Power Off Procedure 65
Chapter 5 66
Subsystem Maintenance and 66
Upgrading 66
5.2.1 Overview 68
CAUTION! 73
5.4.2 Replacing a PSU Module 76
5.6. Drive Tray Maintenance 79
5.6.2 Hard Drive Replacement 80
Appendix 81
Subsystem Specifications 81
A.2.1 Configuration 83
A.2.2 Architecture 83
A.6. RAID Management 85
Appendix B 86
Uninterruptible Power Supply 86
B.4.2 Set the Baud Rate 87
B.4.3 Connect COM2 87
B.5. Power On 88
B.6. UPS Status Monitoring 88
B.6.2 UPS Messages 89
B.6.3 UPS Message Summary 90
Appendix C 91
Spare Parts and Accessories 91
Appendix D 93
D.2. DB9 Audio Jack Pinouts 94
Definitions 95
D.3. Ethernet Port Pinouts 96
D.4. Main Power 96
Index I--1 97
-2 Index 98
Index I--3 99
-4 Index 100

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APC RAID Subsystem SCSI-SATA II Specifications Page 58

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