Compaq ProLiant 6500 Compaq Parallel Database Cluster Model PDC/O2000 for Orac - Page 105

Compaq StorageWorks Secure Path for Windows 2000, Compaq Operating System Dependent Modules

Get Compaq ProLiant 6500 PDF manuals and user guides View all Compaq ProLiant 6500 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 105 highlights

Cluster Software Components 3-5 Compaq StorageWorks Secure Path for Windows 2000 Compaq StorageWorks Secure Path for Windows 2000 (Secure Path) must be installed on each server (node) in the PDC/O2000. Secure Path monitors all I/O paths to the storagesets in the shared storage subsystems. If any component along an active I/O path fails, Secure Path detects this failure and automatically reroutes I/O activity through the defined backup path. Failovers are transparent and non-disruptive to applications. Secure Path Manager is the client application used to manage multiple path StorageWorks RAID array configurations. Secure Path Manager displays a graphical presentation of the current multiple I/O path environment and indicates the location and state of all configured storage units on each path. To facilitate load balancing, Secure Path Manager provides the capability to move storagesets from their configured paths to other paths during normal cluster operation. Secure Path Manager can be run locally at the cluster nodes or remotely at a management station. Compaq Operating System Dependent Modules Compaq supplies low-level services, called operating system dependent modules (OSDs), which are required by Oracle8i Parallel Server. The OSD layer monitors critical clustering hardware components, constantly relaying cluster state information to Oracle8i Parallel Server. Oracle8i Parallel Server monitors this information and takes pertinent action as needed. For example, the OSD layer is responsible for monitoring the cluster interconnect of each node in the cluster. The OSD layer determines if one of the nodes is no longer responding to the cluster heartbeat. If the node still does not respond, the OSD layer determines it is unavailable. The OSD layer evicts the node from the cluster and informs Oracle8i Parallel Server. Oracle8i Parallel Server recovers the part of the database affected by that node, and reconfigures the cluster with the remaining nodes. OSDs for Oracle8i Parallel Server For a detailed description of how the OSD layer interacts with Oracle8i Parallel Server, refer to the Oracle8i Parallel Server Setup and Configuration Guide. The OSD software is found on the Compaq Parallel Database Cluster Clustering Software for Oracle8i on Microsoft Windows 2000 CD. This CD is supplied in the cluster kit for the Compaq Parallel Database Cluster Model PDC/O2000 for Windows 2000.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
Cluster Software Components
3-5
Compaq StorageWorks Secure Path
for Windows 2000
Compaq StorageWorks Secure Path for Windows 2000 (Secure Path) must be
installed on each server (node) in the PDC/O2000. Secure Path monitors all
I/O paths to the storagesets in the shared storage subsystems. If any
component along an active I/O path fails, Secure Path detects this failure and
automatically reroutes I/O activity through the defined backup path. Failovers
are transparent and non-disruptive to applications.
Secure Path Manager is the client application used to manage multiple path
StorageWorks RAID array configurations. Secure Path Manager displays a
graphical presentation of the current multiple I/O path environment and
indicates the location and state of all configured storage units on each path. To
facilitate load balancing, Secure Path Manager provides the capability to move
storagesets from their configured paths to other paths during normal cluster
operation. Secure Path Manager can be run locally at the cluster nodes or
remotely at a management station.
Compaq Operating System Dependent Modules
Compaq supplies low-level services, called operating system dependent
modules (OSDs), which are required by Oracle8
i
Parallel Server. The OSD
layer monitors critical clustering hardware components, constantly relaying
cluster state information to Oracle8
i
Parallel Server. Oracle8
i
Parallel Server
monitors this information and takes pertinent action as needed.
For example, the OSD layer is responsible for monitoring the cluster
interconnect of each node in the cluster. The OSD layer determines if one of
the nodes is no longer responding to the cluster heartbeat. If the node still does
not respond, the OSD layer determines it is unavailable. The OSD layer evicts
the node from the cluster and informs Oracle8
i
Parallel Server. Oracle8
i
Parallel Server recovers the part of the database affected by that node, and
reconfigures the cluster with the remaining nodes.
OSDs for Oracle8
i
Parallel Server
For a detailed description of how the OSD layer interacts with Oracle8
i
Parallel Server, refer to the
Oracle8i Parallel Server Setup and Configuration
Guide.
The OSD software is found on the Compaq Parallel Database Cluster
Clustering Software for Oracle8
i
on Microsoft Windows 2000 CD. This CD is
supplied in the cluster kit for the Compaq Parallel Database Cluster Model
PDC/O2000 for Windows 2000.