Dell PowerVault MD3200i User Manual Page 167
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Configuration: Premium Feature—Snapshot Virtual Disks 167
Re-creating Snapshot Virtual Disks
You can re-create a snapshot virtual disk that you have previously disabled.
CAUTION: Possible loss of data redundancy – If the snapshot virtual disk is in
Optimal status, it is first disabled prior to being re-created. This action invalidates
the current snapshot.
Keep these important guidelines in mind when you re-create a snapshot
virtual disk:
• To re-create the snapshot virtual disks correctly, follow the instructions for
your operating system.
NOTE: Failing to follow these additional instructions could create unusable
snapshot virtual disks. For more information, see the
PowerVault Modular
Disk Storage Manager online help
topics.
• To use this option, the snapshot virtual disk must be either in an Optimal
status or Disabled status.
• When using this option, the previously configured snapshot name
parameters and snapshot repository virtual disk are used.
To recreate the snapshot virtual disk:
1
In the AMW, select the
Logical
tab, select a snapshot virtual disk.
2
Select
Virtual Disk
Snapshot
Re-create
.
3
Ty pe
yes
, and click
OK
.
Snapshot Rollback
The snapshot rollback feature allows you to revert the contents of a virtual
disk to match a point-in-time image existing on a snapshot virtual disk.
During a rollback, the host server can still write data to the base virtual disk.
However, the snapshot virtual disk is set as read-only during the rollback
operation and becomes available for write operations immediately after the
rollback is complete. The snapshot virtual disk cannot be restarted, deleted,
or disabled during the rollback operation.
book.book Page 167 Tuesday, June 18, 2013 3:15 PM
- Owner’s Manual 1
- Notes, Cautions, and Warnings 2
- Contents 3
- 4 Contents 4
- 6 Configuration: About Your 6
- 8 Contents 8
- 11 Configuration: Premium 10
- 12 Configuration: Premium 11
- Feature—Virtual Disk Copy 11
- 12 Contents 12
- 14 Contents 14
- 16 Contents 16
- 18 Contents 18
- Introduction 19
- Series Storage Array 20
- Introduction 21 21
- 22 Introduction 22
- Overview 23
- Hardware Features 24
- Hard-Drive Indicator Patterns 28
- RAID Controller Modules 31
- Battery Backup Unit 34
- Cache Functions and Features 35
- Write-Through Cache 36
- Array Terms and Concepts 37
- Physical Disk States 38
- Virtual Disks and Disk Groups 39
- RAID Levels 40
- RAID Level Usage 41
- Segment Size 42
- Virtual Disk Operations 43
- Consistency Check 44
- Media Verification 44
- Cycle Time 44
- Disk Group Operations 45
- Disk Group Defragmentation 46
- Disk Group Operations Limit 47
- Disk Migration 48
- Advanced Features 50
- Host Types 51
- Multi-Path Software 54
- Virtual Disk Ownership 55
- Load Balancing 56
- Configuration: Overview 61
- Enterprise Management Window 62
- Array Management Window 63
- Out-of-Band Management 65
- Storage Arrays 66
- Setting Up Your Storage Array 68
- Locating Storage Arrays 69
- Setting a Password 71
- Password Guidelines 72
- Removing Storage Arrays 73
- Enabling Premium Features 74
- Failover Alert Display 74
- Configuring E-mail Alerts 76
- Configuring SNMP Alerts 79
- Battery Settings 81
- Configuration: Using iSCSI 83
- Creating CHAP Secrets 84
- Initiator CHAP Secret 85
- Target CHAP Secret 85
- Statistics 91
- 92 Configuration: Using iSCSI 92
- Configuration: Event Monitor 93
- Configuring Host Access 95
- Using the Mappings Tab 96
- Removing Host Access 98
- Managing Host Groups 98
- Adding a Host to a Host Group 99
- Removing a Host Group 100
- Host Topology 100
- I/O Data Path Protection 102
- Virtual Disks 105
- Creating Disk Groups 106
- Locating a Disk Group 108
- Creating Virtual Disks 108
- Changing the I/O Type 114
- Creating a Security Key 118
- Changing a Security Key 119
- Saving a Security Key 121
- Validate Security Key 122
- Erasing Secure Physical Disks 122
- Hot Spares and Rebuild 125
- Global Hot Spares 125
- Hot Spare Operation 125
- Enclosure Loss Protection 126
- Host-to-Virtual Disk Mapping 128
- Restricted Mappings 136
- Disk Group 137
- Storage Partitioning 140
- Disk Group Expansion 141
- Virtual Disk Expansion 142
- Using Free Capacity 142
- Using Unconfigured Capacity 142
- Disk Group Migration 143
- Import Disk Group 144
- Storage Array Media Scan 145
- Changing Media Scan Settings 146
- Suspending the Media Scan 147
- Snapshot Virtual Disks 149
- Simple Path 152
- About the Simple Path 153
- Advanced Path 156
- Snapshot Repository Capacity 162
- Capacity option is disabled 163
- PowerVault Modular 165
- Snapshot Rollback 167
- Starting a Snapshot Rollback 169
- Resuming a Snapshot Rollback 170
- Canceling a Snapshot Rollback 171
- Virtual Disk Copy 173
- Types of Virtual Disk Copies 174
- Online Copy 175
- Creating a Virtual Disk Copy 178
- Create Copy Wizard 179
- Failed Virtual Disk Copy 179
- Failed RAID Controller Module 180
- Copy Manager 180
- Copying the Virtual Disk 180
- Setting Copy Priority 182
- Stopping a Virtual Disk Copy 183
- Recopying a Virtual Disk 183
- Re-Copying a Virtual Disk 185
- Removing Copy Pairs 186
- Configuration: Device Mapper 191
- Multipath for Linux 191
- Using DM Multipathing Devices 192
- Ready For Use 196
- Limitations and Known Issues 199
- Troubleshooting 200
- Packages 203
- Firmware 204
- EMM Firmware 210
- Technology (SMART) 212
- Management: Installing Array 213
- Components 213
- Front Bezel (Optional) 214
- Hard Drives 215
- Installing a Hard-Drive Blank 216
- Removing a Hard Drive 216
- Installing a Hard Drive 218
- RAID Controller Module 221
- Control Panel 231
- Installing the Control Panel 232
- Backplane 233
- Installing the Backplane 236
- Management: System Interfaces 239
- Array Software 241
- Storage Array Support Data 244
- Event Log 246
- Recovery Guru 247
- Storage Array Profile 248
- Finding Nodes 250
- Using Go To 252
- Condition 253
- Locating a Physical Disk 255
- SMrepassist Utility 259
- Unidentified Devices 260
- Software 262
- Troubleshooting: Your Array 265
- Management Modules 267
- Troubleshooting Hard Drives 270
- Connections 271
- Conditions 273
- Invalid Storage Array 273
- ECC Errors 273
- PCI Errors 274
- Critical Conditions 274
- Noncritical Conditions 274
- Getting Help 275
- Documentation Feedback 276
- Index 275 277
- Index 276 278
- Index 277 279
- Index 278 280
- Index 279 281
- Index 280 282
- Index 281 283
- 282 Index 284
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