APC RAID Subsystem SCSI-SATA II Specifications Page 89
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Falcon 24 Bay SCSI-SATA Installation and Hardware Reference Manual
B.6.1 Normal Operational Status
If the UPS is connected to main power and the UPS battery power level is above 50%,
then no status messages will appear and the “Write-back” write policy will be applicable.
B.6.2 UPS Messages
The following messages may appear on the LCD screen:
Message 1: “UPS connection is absent”
This message appears when COM2 has not been connected to the UPS or an established
link is lost.
Message 2: “UPS connection detected”
This message appears when the COM2 port link to a UPS has just been established.
Message 3: “Warning: UPS AC Power-Loss detected”
This message appears when the UPS battery power level remains above 50% but its
connection to the AC power source has been disrupted.
Message 4: “Warning: UPS Battery Low 50%. Please shut down to protect data loss”
This message appears when the UPS battery power level has dipped below 50% of its
charge capacity and the UPS has either been disconnected from the AC power source or
the AC power source has been disrupted. If the event triggered configuration has been
enabled, arrays using write-back caching will be forced to adopt the write-through mode.
When the UPS battery is restored to its full charge, the original array operating mode will
be restored.
Message 5: “Warning: UPS Battery Low 50%”
This message appears when the UPS battery power level has dipped below 50% of its
capacity. The default write policy will be changed from the default write back to write
through.
Message 6: “UPS Battery restored to safe level”
This message appears when the UPS battery power level has been restored to above 50%
of its capacity. The original array write policy will be restored.
Message 7: “UPS AC Power Restored”
This message appears when the AC power supply to the UPS has been restored. If the
UPS battery power level is below 50%, the write policy will remain as write through. If
the battery power level is above 50%, the write policy will change from write through to
write back.
B-4 UPS Status Monitoring
- 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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