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Single-Ended I/O Module
5–4 UltraSCSI RAID Enclosure
Controlling the Internal SCSI Bus
The I/O module controls the internal SCSI bus in the following
manner:
• Isolates the internal SCSI bus from the external SCSI bus
• Provides single-ended SCSI bus termination for each internal bus
• Disconnects the internal SCSI bus from the external SCSI bus
when directed by the EMU
• Distributes TERMPOWER (+5 V dc) to the internal SCSI bus
• Turns O
N the green internal TERMPOWER LED when internal
TERMPOWER is present
• Turns O
FF the green internal TERMPOWER LED when there is
either an internal TERMPOWER overcurrent condition or no
TERMPOWER
Controlling the External SCSI Bus
The I/O module controls the external SCSI bus in the following
manner:
• Provides single-ended SCSI bus termination for the external bus
• Distributes TERMPOWER (+5 V dc) to the external SCSI bus
• Turns O
N the green external TERMPOWER LED when external
TERMPOWER is present
• Turns O
FF the green external TERMPOWER LED when there is
either an external TERMPOWER overcurrent condition or no
TERMPOWER
• Disables the external bus termination when a cable is connected
to the right VHDCI connector
- Compaq StorageWorks 1
- UltraSCSI RAID Enclosure 1
- (DS–BA370 Series) 1
- User's Guide 1
- Table of Contents 3
- Chapter 6, Power Distribution 6
- Chapter 7, Storage Devices 6
- Chapter 8, Enclosure Blowers 7
- List of Figures 10
- List of Tables 11
- Intended Audience 13
- Structure 13
- Documentation Conventions 15
- Related Documents 16
- Manufacturer’s Declarations 19
- Acoustic Noise Declarations 20
- Introducing the UltraSCSI 23
- RAID Enclosure 23
- CXO6264A 25
- An UltraSCSI Bus Overview 26
- Product Description 27
- Figure C 28
- 1. SCSI bus 28
- UltraSCSI RAID Subsystem 29
- Master Enclosure 30
- Master EMU 30
- Expansion Enclosure 30
- Expansion EMU 31
- I/O Module 31
- SCSI Bus Controller 31
- Enclosure Status 32
- For Both Figures 33
- Dual Controllers 35
- UltraSCSI Bus Expansion 35
- Operating the UltraSCSI 37
- Enclosure 37
- UltraSCSI RAID Controllers 38
- UltraSCSI Nodes 39
- CXO5926A 40
- Starting the Subsystem 41
- Applying Power 42
- Turning On the Subsystem 43
- Shutting Down the Subsystem 44
- FF the dc power 45
- Turning Off the Subsystem 46
- Fault Detection 48
- Enclosure Status Indicators 49
- For Figures 50
- LED is O 51
- ALLOUT 2) is ON when the 52
- ALLOUT 1) is ON or 53
- ALLOUT 3) are 54
- FF when the bus is 54
- N or FLASHING indicates 54
- CXO6303A 55
- ALLOUT 2) and external 56
- Environmental Monitoring 57
- FF. When any 59
- FF the enclosure 59
- I/O Module Status 60
- FF and initiates a fault 61
- Configuring the EMU 63
- EMU Firmware 64
- EMU Firmware Version 1.2 65
- Environmental Monitoring Unit 67
- EMU Status Reporting 70
- ALLOUT 2, Figure 71
- FF until one of the 71
- EMU Status LEDs 72
- N. Refer to Figure 3–5 as 74
- CXO6546A 76
- LASHING alarm control 77
- CXO6598A 78
- CXO5762A 79
- CXO5763A 80
- CXO5770A 82
- CXO5773A 83
- Replacing an EMU 84
- CXO-5497A-MC 85
- CXO5754B 85
- CXO5820A 86
- Power Verification and 87
- Addressing 87
- CXO-5737A 87
- Functions 89
- PVA Operation 90
- Nominal Voltage 92
- +5 V dc +12 V dc 92
- Minimum Voltage 92
- +4.7 V dc +11.4 V dc 92
- Setting the Enclosure Address 93
- CXO-4840A-MC 94
- Replacing a PVA 98
- Table 4–7 Installing a PVA 100
- CXO5488B 101
- Single-Ended I/O Module 103
- CXO5805B 104
- Single-Ended I/O Module 104
- FF the enclosure power 105
- FF without 107
- N during normal operation 108
- CXO5819A 110
- CXO5702A 112
- CXO5816A 114
- N the subsystem 117
- CXO5854B 119
- Replacing an I/O Module 123
- Replacing an Expansion Cable 125
- Power Distribution 127
- Power System Overview 128
- AC Power Source 129
- AC Input Box 130
- Shelf Power Supplies 131
- ALLOUT 1), Compaq recommends 132
- Redundant (n+4) Power Supply 134
- Configurations 134
- Error Condition Reporting 136
- Replacing a Power Supply 138
- Power Distribution 140
- Replacing an AC Input Box 143
- Storage Devices 147
- Identifying a Storage Device 148
- Storage Devices 150
- The SBB Connector 152
- LASHING 154
- Replacing a Disk Drive SBB 155
- CXO-5338A-MC 157
- CXO-4562A-MC 158
- Enclosure Blowers 161
- Enclosure Blowers 162
- Function and Operation 163
- FF the dc power distribution 164
- CXO5753B 165
- UltraSCSI Enclosure 167
- Specifications 167
- CXO5797A 168
- Operating Environments 169
- Condition Specification 170
- Altitude 4900 m (16,000 ft) 170
- SBB Thermal Stabilization 171
- Appendix B 173
- Installation Sequence 174
- Installing the EMU 175
- Installing the PVA 175
- CXO5798A 177
- 3) in the 178
- (Continued) 179
- Installing the Power System 181
- Connecting Subsystem Cables 182
- Configuring the Subsystem 182
- Appendix C 183
- Prerequisites 184
- Preliminary Procedure 184
- Installing EMU Microcode 185
- Preparing the EMU 186
- Loading the Microcode 186
- Restarting the Controller 188
- Glossary 189
- Glossary 190
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