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2-12 AlphaServer GS80/160/320 User’s Guide

2.3.4 Directory Module

In a GS160/320 system, one directory module is required for each QBB

in a system box. In a two-drawer GS80 system, a directory module is

required in each system drawer. No directory module is needed in a

one-drawer system. The directory module functions as a memory

coherency manager.

Figure 2–8 Directory Module

Directory

DIMMs

PK0606

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 180 181

AlphaServer GS80/160/320 1
Contents 3
Chapter 7 Operation 5
Examples 6
Intended Audience 9
Document Structure 9
Documentation Titles 10
Information on the Internet 10
Chapter 1 11
GS160 System 12
GS80 System 12
Manages hard partitions 14
System Architecture 15
Chapter 2 17
GS160/320 System Overview 17
System Characteristics 18
System Box Architecture 20
System Box 21
PK-0612-98 22
1 2 3 4 3 4 5 24
6 4 3 4 3 7 8 9 24
2.3.2 CPU Module 26
2.3.3 Memory Module 27
Directory 28
PK-0604-99 29
2.3.7 Clock Splitter Module 31
2.3.8 I/O Riser Module 32
2.3.9 Global Port Module 33
PK-0655-00 33
Rear QBB 33
Front QBB 33
PK-0601A-98 35
Power System 38
Figure 2–18 AC Input Box 40
PCI I/O 42
Control Panel 44
2.6.1 Control Panel LEDs 46
Chapter 3 47
GS160 System Cabinet 48
Vertical mounting rails 49
GS320 System Cabinets 50
Power Cabinet 52
AC Input 2 54
AC Input 1 54
System Box 56
A system box has two QBBs 57
QBB Color Code 58
Memory Configurations 60
PCI Boxes 64
PK-0643-99 66
6754 321 66
5647132Slot 66
Riser Riser 0 66
Expander Cabinet 68
Chapter 4 69
GS80 Rack System Overview 69
Rack System Characteristics 70
System Drawer Architecture 72
System Drawer Modules 74
PK-0632-99 75
Chapter 5 77
5.1 Rack 78
Rack Power System 80
Chapter 6 83
Powering Up the System 84
6.1.2 SRM Power-Up Display 88
Setting Boot Options 92
6.2.2 Boot_file 93
6.2.3 Boot_osflags 94
Booting Tru64 UNIX 98
Example 6–4 RIS Boot 100
➌ sets the internal Internet 101
Installing Tru64 UNIX 102
Booting OpenVMS 104
Example 6–7 InfoServer Boot 106
Installing OpenVMS 108
Chapter 7 111
SRM Console 112
7.2.1 Show Boot Command 117
➓➀➁➂ ➃ ➄ ➅ 122
Continued on next page 124
➓ helps the user locate 125
7.2.3 Show Device Command 126
Operation 7-17 127
Category Description 127
7.2.4 Show Memory Command 128
Soft Partitioning 132
Hard Partitioning 136
Chapter 8 139
PK-0613-98 140
SCM COM1 Operating Modes 144
8.3.1 Bypass Modes 146
Console Device Setup 149
Entering the SCM 150
SCM Command-Line Interface 152
Troubleshooting Tips 168
Appendix A 171
Jumpering Information 171
HPM Jumpers 172
Standard I/O Module Jumpers 172
Glossary 173

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