APC RAID Subsystem SCSI-SATA II Specifications Page 53
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Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual
4.1.2 SCSI Port on the Controller Rear Panel
The subsystem is equipped with two (2) dual-stacked connectors featuring four (4)
VHDCIs on the controller faceplate. (See Figure 4-1) Each 68-pin VHDCI connector is
specified as “CH # IN” or “CH # OUT” ports. The “In” ports connect to SCSI initiators
(host HBAs), and the “Out” ports connect to SCSI targets (expansion enclosures). Due to
the demands of signal trace layout, each VHDCI port should be connected according to
the data flow direction (target or initiator).
Figure 4-1: SCSI Connectors on the Controller Faceplate
4.1.3 SCSI Termination
SCSI termination requires that the last device on the SCSI bus is terminated. If the last
device is not terminated, or if devices other than the last are terminated, erratic SCSI bus
performance may occur.
The RAID controller comes with built-in auto-sense terminators. You do not have to
install an external terminator when the subsystem acts as the last device in the daisy-
chain configuration. However, you will need to “disable” the firmware setting for the on-
board terminator using the LCD keypad panel, RS-232C terminal session, or RAIDWatch
management software if the “IN” and “OUT” ports are separately connected to servers
and/or a cascaded enclosure. (The firmware default for channel termination is set to
“enabled.”)
See the diagrams below for correct configurations and the configuration that may cause
problems:
4-2
SCSI Host Connection Prerequisites
- 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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