Ultra Start 450 SERIES Instruction Manual Page 69
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Chapter 4 Hardware Configuration 49
Note – In some cases, Platform Notes: Sun Ultra 450 Workstation and Ultra
Enterprise 450 Server may be included with your system documentation instead of on
the Solaris on Sun Hardware AnswerBook.
Hardware Watchdog Mechanism
To detect and respond to system hang conditions, the Ultra Enterprise 450 server
features a hardware watchdog mechanism—a hardware timer that is continually
reset as long as the operating system is running. In the event of a system hang, the
operating system is no longer able to reset the timer. The timer will then expire and
cause an automatic system reset, eliminating the need for operator intervention.
To enable this feature, you must edit the /etc/system file to include the
following entry:
This change does not take effect until you reboot the system.
Four Levels of Diagnostics
For enhanced serviceability and availability, the system provides four different levels
of diagnostic testing: Power-On Self-Test (POST), OpenBoot diagnostics (OBDiag),
SunVTS, and Solstice SyMON.
POST and OBDiag are firmware-resident diagnostics that can run even if the system
is unable to boot the operating system. Application-level diagnostics, such as
SunVTS and Solstice SyMON, offer additional troubleshooting capabilities once the
operating system is running.
POST diagnostics provide a quick but thorough check of the most basic hardware
functions of the system. For more information about POST, see “About Power-On
Self-Test (POST) Diagnostics” on page 372 and “How to Use POST Diagnostics” on
page 373.
OBDiag provides a more comprehensive test of the system, including external
interfaces. OBDiag is described in “About OpenBoot Diagnostics (OBDiag)” on
page 375 and “How to Use OpenBoot Diagnostics (OBDiag)” on page 383.
At the application level, you have access to SunVTS diagnostics. Like OBDiag,
SunVTS provides a comprehensive test of the system, including its external
interfaces. SunVTS also allows you to run tests remotely over a network
set watchdog_enable = 1
- Enterprise 1
- 450 Server 1
- Owner’s Guide 1
- FCCClassANotice 3
- FCCClassBNotice 3
- DeclarationofConformity 5
- Contents 7
- Contents ix 9
- Contents xi 11
- Contents xiii 13
- Preface xv 15
- Using UNIX Commands 16
- Shell Prompts 16
- Conventions 17
- Related Documents 18
- Cautions 18
- Ordering Sun Documents 19
- Sun Welcomes Your Comments 20
- System Overview 21
- Chapter 1 System Overview 3 23
- Locating Front Panel Features 25
- Unlocked Locked 26
- Locating Rear Panel Features 27
- LEDs Keyswitch 28
- Chapter 1 System Overview 9 29
- Name Icon Description 30
- System Setup 31
- Chapter 2 System Setup 15 35
- Chapter 2 System Setup 19 39
- About Setting Up a Console 40
- ■ At 9600 baud 42
- Standby position 49
- Tools Required 62
- Hardware Configuration 63
- Serviceability Features 64
- Status LEDS 65
- Hot-Pluggable Disk Drives 65
- Configurations 65
- ■ Extreme temperatures 66
- ■ Power supply problems 66
- N+1 Power Supply Redundancy 67
- Hot-Swappable Power Supplies 68
- Hardware Watchdog Mechanism 69
- Four Levels of Diagnostics 69
- About Memory 71
- Configuration Rules 72
- Performance 73
- Level Memory Slot Population 73
- CPU Slot 1 75
- CPU Slot 2 75
- CPU Slot 3 75
- CPU Slot 4 75
- DC/DC converters 75
- About DC/DC Converters 76
- About Peripheral Component 78
- Interconnect (PCI) Buses 78
- About Internal Disk Drives 81
- About Power Supplies 84
- About the Serial Ports 87
- About the Parallel Port 88
- About Serial Port Jumpers 91
- Clock mode select jumper 92
- About Flash PROM Jumpers 93
- Target Devices 95
- Bus Length 96
- Cabling and Termination 96
- Multi-initiator Support 97
- Rated Values 99
- Power Supply Output Capacity 100
- Total AC Current Draw 101
- Before You Begin 102
- Step 1. Fill in the quantity 103
- ■ If yes, proceed to Step 7 104
- ■ If yes, proceed to Step 10 104
- Capacity 112
- Limit of the Power Outlet 116
- Parts Installation and Repair 117
- About Handling Boards 120
- Expansion Option 121
- What to Do 122
- C cable between 125
- What Next 130
- Main Logic Board Components 132
- To install a PCI short card 157
- Backplanes 163
- C cable at connector P0500 187
- Backplane 189
- 3. Disconnect the I 195
- C cable at connector P0600 195
- 3. Connect the I 200
- C cable to connector P0600 200
- Storage Devices 203
- Miscellaneous Assemblies 222
- Internal Cables 264
- SCSI Cable 279
- Administration and Networking 343
- Concepts 361
- Disk Concatenation 362
- RAID 1: Disk Mirroring 362
- RAID 0: Disk Striping 363
- Hot Spares 363
- Hot Plug 364
- For More Information 364
- Thermal Conditioning 382
- About Diagnostic Tools 390
- Diagnostics 392
- ■ System console 394
- ■ Front panel Fault LED 394
- OBDiag Menu 395
- OBDiag Commands 396
- Configuration Variables 397
- OBDiag Test Descriptions 399
- FRU : motherboard 405
- About SunVTS Software 407
- About Solstice SyMON Software 412
- Error Indications 413
- Front Panel LEDs 413
- Keyboard LEDs 414
- Power Supply LEDs 416
- Disk LEDs 417
- Error Messages 417
- Software Commands 418
- Solaris prtdiag Command 418
- OBP show-devs Command 418
- OBP printenv Command 419
- Solution 1 424
- Power-on Failures 425
- Video Output Failure 427
- Disk or CD-ROM Drive Failure 427
- SCSI Controller Failures 428
- Power Supply Failure 429
- DIMM Failure 429
- Environmental Failures 431
- Message Type Description 432
- Connector Pinouts 433
- Serial Port Connector Diagram 434
- Serial Port Signals 434
- Parallel Port Signals 436
- SCSI Connector Signals 437
- SCSI Connector Diagram 437
- Pin Signal Pin Signal 438
- Connector 439
- TPE Connector Diagram 440
- TPE Connector Signals 440
- MII Connector Diagram 441
- MII Connector Signals 441
- 13W3 Video Connector Diagram 442
- 13W3 Connector Signals 442
- System Specifications 443
- Physical Specifications 444
- Electrical Specifications 445
- Environmental Requirements 446
- Safety Precautions 447
- Vorschriften 449
- Class 1 Laser Product 450
- Luokan 1 Laserlaite 450
- Klasse 1 Laser Apparat 450
- Laser Klasse 1 450
- Normativas de seguridad 452
- Illustrated Parts Breakdown 455
- Assembly Illustrations 459
- Key Description Part Number 460
- 3 Front Door 540-2832 462
- 1 Main Logic Board 501-2996 464
- 2 Power Supply 300-1302 465
- 5 Keyswitch Cable 530-2314 466
- 1 Left Side Panel 540-2835 468
- 3 Front Door 540-2910 468
- 4 Right Side Panel 540-2836 468
- Glossary 475
- Glossary 457 477
- Index 459 479
- Index 461 481
- Index 463 483
- Index 465 485
- Index 467 487
- OrderingSunDocuments 489
- SunWelcomesYourComments 489
- AIR MAIL 490
- PAR AVION 490
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