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24 NAS 8000 Concepts
Understanding High Availability
Note This section applies only if you have purchased a high-
availability NAS solution.
High availability characterizes a system that is designed to avoid the loss of
service by reducing or managing failures and minimizing downtime. High
availability implies a service level in which both planned and unplanned
downtime is minimized.
Cluster Components
The HP NAS 8000 cluster consists of two NAS servers, a Quorum server and
storage that may come from either a direct-attached configuration or a SAN.
The NAS servers share access to the storage and provide failover capabilities
for each other, but function as independent servers. The main purpose of
high-availability clusters is to provide a higher degree of storage availability
to client systems than is possible with a single server. This is accomplished by
minimizing single points of failure and providing functional redundancy.
Server downtime and interruptions to storage availability are minimized by
failing over file serving capabilities between the NAS servers in the event of a
failure in either server.
- Edition March 2002 1
- Part number A7418-96001 1
- Format Conventions 2
- Trademark Information 2
- 1 HP NAS 8000 Overview 9 3
- 2 NAS 8000 Concepts 21 3
- 3 Getting Started 35 4
- 5 Managing Your Storage 77 5
- 6 Monitoring the System 113 7
- Applications 159 9
- Upgrades 175 9
- HP NAS 8000 Overview 11
- Product Overview 12
- Figure 1 NAS Racked System 13
- HP Surestore tape libraries 13
- Product Configurations 15
- 14 HP NAS 8000 Overview 16
- HP NAS 8000 Overview 15 17
- 16 HP NAS 8000 Overview 18
- SAN Configuration 19
- 18 HP NAS 8000 Overview 20
- User’s Guide Overview 21
- 20 HP NAS 8000 Overview 22
- NAS 8000 Concepts 23
- Physical Storage 24
- Logical Storage 25
- Cluster Components 26
- Failover Models 27
- Resource Model 28
- Failover Packages 29
- 28 NAS 8000 Concepts 30
- About HP NAS Server Security 31
- 30 NAS 8000 Concepts 32
- Share-Level Security 33
- User Level (Domain) Security 33
- Permissions 34
- NAS 8000 Concepts 33 35
- 34 NAS 8000 Concepts 36
- Getting Started 37
- 36 Getting Started 38
- Getting Started 37 39
- 38 Getting Started 40
- Using Online Help 41
- Task Overview 42
- 42 Getting Started 44
- Configuring Your System and 45
- Identifying your NAS Server 48
- Shutting Down and Restarting 49
- Configuring System Security 51
- Configuring System Settings 53
- Setting the Date and Time 54
- Assigning Contact Information 54
- Configuring TCP/IP Settings 56
- Enabling Bonding 58
- Entering Node Settings 63
- Defining the Cluster Name 64
- Defining the Quorum Server 64
- Windows Settings 68
- UNIX Settings 70
- Specifying NIS Properties 70
- Specifying NFS Properties 71
- Configuring Alert Settings 72
- Defining Email Alerts (SMTP) 73
- Configuring UPS Connections 78
- Managing Your Storage 79
- Managing Arrays and LUNs 80
- Scanning for New Storage 81
- Renaming an Array 81
- Creating a LUN 82
- Deleting a LUN 83
- Managing Volume Groups 84
- Editing a Volume Group 85
- Deleting a Volume Group 86
- Managing Failover Packages 87
- Adding a New Package 88
- Editing a Package 89
- Deleting a Package 90
- Starting a Package 90
- Stopping a Package 91
- Failing Over a Package 91
- Failing Back a Package 92
- Managing File Volumes 93
- Creating a New File Volume 94
- Editing a File Volume 95
- Deleting a File Volume 96
- Managing Shares and Exports 97
- 96 Managing Your Storage 98
- Deleting a Share or Export 99
- Creating a Directory 100
- Renaming a Directory 101
- Deleting a Directory 101
- Using Snapshots 102
- Creating a Snapshot 103
- Editing a Snapshot 104
- Deleting a Snapshot 104
- Scheduling a Snapshot 105
- 104 Managing Your Storage 106
- Managing Quotas 107
- Managing User Quotas 108
- Adding a User Quota 109
- Editing a User Quota 109
- Deleting a User Quota 110
- Managing Group Quotas 111
- Adding a Group Quota 112
- Editing a Group Quota 112
- Deleting a Group Quota 113
- 112 Managing Your Storage 114
- Monitoring the System 115
- Storage Array Status 116
- Viewing the Status Summary 117
- Monitoring the NAS Server 119
- Viewing the System Log 120
- Monitoring the Environment 121
- Viewing Cooling Fan Status 122
- Monitoring Components 123
- Viewing Memory Status 123
- Viewing UPS Status 124
- Monitoring Performance 125
- Viewing Client Activity 126
- Monitoring Nodes 127
- Monitoring Failover Packages 127
- 126 Monitoring the System 128
- Enabling Virus and Backup 129
- Software 129
- Using NAS Virus Protection 130
- Updating the Virus File 132
- Using Scheduled Scan Control 133
- Copying a Scan Task 136
- Deleting a Scan Task 136
- Changing RTP Global Settings 138
- Managing Quarantined Files 139
- Viewing Virus Logs 141
- Using the Backup Agent 142
- Connecting Tape Devices 143
- HP OpenView OmniBack II 144
- Administrator's Guide 144
- Configuring a Backup Device 146
- Configuring the Tape Drives 146
- Backing Up Files 147
- Enabling Snapshots 154
- Recovering from a Disaster 155
- Integrating with Network 161
- Backup Applications 161
- Using HP OpenView OmniBack II 163
- Domain Name 165
- NAS Device 165
- ARCserve 2000 for Windows NT 167
- Using Veritas Backup Exec 169
- NAS server 170
- Using Veritas NetBackup 171
- NetBackup for UNIX 172
- Storage Manager for Windows 173
- Storage Manager for UNIX 174
- Using Legato NetWorker 175
- Networker for UNIX 176
- Obtaining Product Support 177
- Contact Customer Support 178
- Viewing Open Source Code 180
- Using Array Diagnostics 181
- Upgrades 182
- NAS 8000 System and 185
- Hardware Upgrades 185
- NAS Server Upgrades 186
- Assigning IP Addresses 188
- Firmware Upgrades 188
- Standard Server Upgrades 188
- Storage Array Upgrades 189
- Tape Library Upgrade 192
- SCSI or FC: 195
- UPS Upgrade 197
- UPS Product Information 198
- SNMP Trap Definitions 199
- 198 SNMP Trap Definitions 200
- SNMP Trap Definitions 199 201
- 200 SNMP Trap Definitions 202
- Legal Information 203
- 202 Legal Information 204
- Legal Information 203 205
- 204 Legal Information 206
- Legal Information 205 207
- 206 Legal Information 208
- Legal Information 207 209
- 208 Legal Information 210
- Warranty Information 211
- 212 Legal Information 214
- Command View SDM 215
- Limitations 215
- Command View NAS 223
- Command Line Interface 223
- Glossary 225
- 224 Glossary 226
- Glossary 225 227
- 226 Glossary 228
- Glossary 227 229
- HP Surestore Virtual Array 230
- Glossary 229 231
- 230 Glossary 232
- Glossary 231 233
- 232 Glossary 234
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