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file systems and the data disks across SCSI buses, removing the single SCSI
bus as a single point of failure for these file systems.
1.5.3 Two-Node Configurations with UltraSCSI BA356 Storage Units
and Dual SCSI Buses
By adding a second shared SCSI bus, you now have the capability to use the
Logical Storage Manager (LSM) to mirror data disks, and the clusterwide
/usr and /var file systems across SCSI buses.
______________________ Note _______________________
You cannot use LSM to mirror the clusterwide root (/), member
system boot, swap, or quorum disks, but you can use hardware
RAID.
Figure 1–5 shows a small cluster configuration with dual SCSI buses using
LSM to mirror the clusterwide /usr and /var file systems and the data
disks.
Introduction 1–11
- TruCluster Server 1
- Contents 3
- UltraSCSI Hardware 4
- Hardware 4
- 6 Using Fibre Channel Storage 5
- Server Configuration 7
- Contents ix 9
- Examples 11
- Contents xiii 13
- Contents xv 15
- About This Manual 17
- Related Documents 18
- About This Manual xix 19
- About This Manual xxi 21
- Reader’s Comments 22
- Conventions 22
- About This Manual xxiii 23
- Introduction 25
- 1.2 Memory Requirements 26
- 1.3 Minimum Disk Requirements 26
- 1.4 Generic Two-Node Cluster 28
- Memory Channel 29
- Shared SCSI Bus 29
- Introduction 1–7 31
- 1–8 Introduction 32
- Increased Disk Configurations 33
- 1–10 Introduction 34
- Introduction 1–11 35
- 1–12 Introduction 36
- 1–14 Introduction 38
- Introduction 1–15 39
- 1–16 Introduction 40
- Introduction 1–17 41
- ZK-1748U-AI 44
- P00>>> 46
- 2.4 Disk Device Restrictions 51
- 2.6 SCSI Signal Converters 52
- 2.8 SCSI Cables 54
- 3.2 SCSI Bus Performance 59
- 3.2.2 Transmission Methods 60
- 3.2.3 Data Path 61
- 3.2.4 Bus Speed 61
- 3.4 SCSI Bus Length 62
- UltraSCSI Hubs 63
- CXO5744A 64
- 3.6 UltraSCSI Hubs 64
- Differential symbol 66
- ZK-1412U-AI 66
- ZK-1448U-AI 70
- ZK-1447U-AI 71
- Member System 2 81
- Member System 1 81
- Using UltraSCSI Hardware 83
- # umount /mnt 87
- Radial Configuration 89
- Commands 92
- KZPBA-CB SCSI ID 96
- ZK-1451U-AI 100
- Interconnect 101
- 5.1.1 MC1 and MC1.5 Jumpers 102
- 5.1.2 MC2 Jumpers 103
- Linecards 109
- ZK-1197U-AI 109
- ZK-1530U-AI 120
- ZK-1522U-AI 121
- ZK-1523U-AI 122
- ZK-1524U-AI 123
- ZK-1525U-AI 124
- MC1 in Second System 125
- Configuration 126
- Using Fibre Channel Storage 127
- 6.2 Fibre Channel Overview 130
- ZK-1534U-AI 133
- ZK-1536U-AI 134
- ZK-1531U-AI 136
- ZK-1706U-AI 138
- ZK-1707U-AI 139
- 6.4.1 Zoning 140
- ZK-1709U-AI 141
- Select Menu: 145
- Configuration Menu 145
- Adapter Module 149
- Reformatting nvram 152
- Installation 154
- 6.6.1 Before You Install 162
- Cluster Member 179
- POO>>> init 181
- Failover Mode 183
- 6.7.1 Overview 184
- as follows: 185
- Adapter Information 188
- Present, Logged in, F_PORT 190
- ZK-1749U-AI 195
- ZK-1750U-AI 198
- ZK-1751U-AI 199
- 2 The type of CSB node: 209
- P00>>> Esc Esc scm 213
- SCM_E0> reset 213
- SCM_E0> set hp_count 2 213
- SCM_E0> power on 213
- Drive Use 215
- TZ88N−VA 216
- 8.1.2 Cabling the TZ88N-VA 217
- ZK-1761U-AI 218
- TZ88N-VA 218
- TZ89N-VW 218
- 8.1.4 Cabling the TZ88N-TA 219
- DS−TZ89N−VW 221
- 20/40 GB DLT Tape Drive 225
- 8.4 Compaq 40/80-GB DLT Drive 228
- ZK-1461U-AI 235
- Shared SCSI Usage 237
- Interface 242
- Figure 8–11 246
- DLT0 Idle 248
- DLT1 Idle 248
- Loader Idle 248
- 0>__________<9 248
- DLT2 Idle 249
- DLT3 Idle 249
- 26>__________<35 249
- Shared SCSI Bus Usage 250
- ZK-1324U-AI 254
- ZK-1625U-AI 256
- 8.10.4 Upgrading a TL895 261
- 8.11.2 MUC Switch Functions 264
- 8.11.4 Tape Drive SCSI IDs 265
- ZK-1326U-AI 267
- ZK-1327U-AI 268
- Figure 8–17 270
- Shown in Figure 8–16 270
- Shared Bus Usage 271
- Figure 8–18 280
- Shown in Figure 8–17 280
- Expansion Modules 283
- 8.13.1 General Overview 287
- Bus Usage 288
- SCSI Bulkhead 290
- ZK-1705U-AI 290
- Configurations Using External 293
- Non-UltraSCSI Devices 9–3 295
- ZK-1576U-AI 296
- Non-UltraSCSI Devices 9–5 297
- Non-UltraSCSI Devices 9–7 299
- FRONT VIEW 300
- REAR VIEW 300
- 9.3.1 BA350 Storage Shelf 301
- ZK-1338U-AI 302
- Non-UltraSCSI Devices 9–11 303
- ZK-1339U-AI 304
- Non-UltraSCSI Devices 9–13 305
- External Termination 306
- Non-UltraSCSI Devices 9–15 307
- Non-UltraSCSI Devices 9–17 309
- Figure 9–9 and Figure 9–10 311
- BA356s for storage 313
- Figure 9–10 313
- Figure 9–11 315
- Terminated Shared SCSI Bus 316
- Non-UltraSCSI Devices 9–25 317
- Non-UltraSCSI Devices 9–29 321
- ZK-1766U-AI 322
- Non-UltraSCSI Devices 9–31 323
- Non-UltraSCSI Devices 325
- Termination 326
- Termination (cont.) 332
- Console Commands 333
- KZPSA-BB and KZPBA-CB SCSI ID 337
- P00>>> boot dka600 342
- UBPG PUBLICATIONS MANAGER 362
- ZKO3-3/Y32 362
- 110 SPIT BROOK RD 362
- COMPAQ COMPUTER CORPORATION 362
- NASHUA NH 03062-2698 362
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