Hp StorageWorks 1200 All-in-One Storage System User Manual Page 141
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NFS shadow copies
UNIX users can independently access previous versions of files stored on NFS shares via the NFS
client; no additional software is required. Server for NFS exposes each of a share's available shadow
copies as a pseudo-subdirectory of the share. Each of these pseudo-subdirectories is displayed in
exactly the same way as a regular subdirectory is displayed.
The name of each pseudo-subdirectory reflects the creation time of the shadow copy, using the format
.@GMT-YYYY.MM.DD-HH:MM:SS. To prevent common tools from needlessly enumerating the
pseudo-subdirectories, the name of each pseudo-subdirectory begins with the dot character, thus
rendering it hidden.
The following example shows an NFS share named “NFSShare” with three shadow copies, taken on
April 27, 28, and 29 of 2003 at 4 a.m.
NFSShare
.@GMT-2003.04.27-04:00:00
.@GMT-2003.04.28-04:00:00
.@GMT-2003.04.29-04:00:00
Access to NFS shadow copy pseudo-subdirectories is governed by normal access-control mechanisms
using the permissions stored in the file system. Users can access only those shadow copies to which
they have read access at the time the shadow copy is taken. To prevent users from modifying shadow
copies, all pseudo-subdirectories are marked read-only, regardless of the user's ownership or access
rights, or the permissions set on the original files.
Server for NFS periodically polls the system for the arrival or removal of shadow copies and updates
the root directory view accordingly. Clients then capture the updated view the next time they issue a
directory read on the root of the share.
Recovery of files or folders
There are three common situations that may require recovery of files or folders:
• Accidental file deletion, the most common situation
• Accidental file replacement, which may occur if a user selects Save instead of Save As
• File corruption
It is possible to recover from all of these scenarios by accessing shadow copies. There are separate
steps for accessing a file compared to accessing a folder.
Recovering a deleted file or folder
To recover a deleted file or folder within a folder:
1. Access to the folder where the deleted file was stored.
2. Position the cursor over a blank space in the folder. If the cursor hovers over a file, that file is
selected.
3. Right-click, select Properties from the bottom of the menu, and then click the Previous Versions
tab.
4. Select the version of the folder that contains the file before it was deleted, and then click View.
5. View the folder and select the file or folder to recover. The view may be navigated multiple folders
deep.
All-in-One Storage System 141
- HP StorageWorks 1
- All-in-One Storage System 1
- Contents 3
- About this guide 15
- Rack stability 16
- HP technical support 17
- Customer self repair 17
- Product warranties 17
- Subscription service 17
- HP websites 18
- Documentation feedback 18
- Setup overview 19
- Configuration checklist 20
- Installing the server 21
- Powering on the server 22
- Factory image 22
- Default boot sequence 23
- Logging off and disconnecting 27
- Telnet Server 27
- Before you begin 30
- Configuration Steps 31
- All-in-One Storage System 31 31
- 2 Storage system components 35
- StatusDescriptionItem 36
- All-in-One Storage System 37 37
- DVD ROM drive1 39
- N/AKensington lock notch1 39
- All-in-One Storage System 41 41
- SAS and SATA hard drive LEDs 43
- Status2. Online/activity LED 44
- 1. Fault/UID LED 44
- (amber/blue) 44
- 3 Storage management overview 45
- Physical storage elements 46
- Logical storage elements 48
- Partitions 49
- File system elements 50
- File sharing elements 50
- Network adapter teaming 51
- Management tools 51
- All-in-One Storage Manager 52
- Storage management overview54 54
- About the user interface 56
- Actions pane 57
- Storage management overview60 60
- NotesDescriptionApplication 61
- All-in-One Storage System 61 61
- Naming a shared folder 64
- Choose type of application 68
- Entering an application name 68
- Planning for Media Rotation 69
- NotesDescriptionItem 72
- Customizing RAID levels 73
- Critical 75
- Selecting data protection 76
- Scheduling backups 77
- Scheduling snapshots 78
- Cancelling tasks 79
- 5 Data protection 81
- Snapshots 82
- Exposing a snapshot 83
- Unexposing a snapshot 83
- Managing backups 84
- Restoring data from backups 84
- Launching DPX 85
- Using DPX to restore data 85
- Data protection86 86
- Data protection88 88
- 6 Managing storage 89
- Managing storage90 90
- Deleting shared folders 92
- 7 Monitoring storage 93
- Properties window 102
- Data Protection 103
- ValueProperty 104
- Storage View 105
- Application Server View 108
- Storage Utilization View 110
- Operating system updates 111
- Application software problems 112
- Maintenance updates 117
- Troubleshooting resources 117
- Storage system documentation 118
- Subscriber's Choice 118
- White papers 118
- Firmware updates 118
- Certificate of Authenticity 119
- 9 System recovery 121
- System recovery122 122
- A File server management 123
- Search enhancements 124
- File Server Resource Manager 124
- Windows SharePoint Services 124
- File services management 125
- Storage management utilities 126
- Disk Management utility 127
- Scheduling defragmentation 128
- Disk quotas 128
- Adding storage 129
- File server management130 130
- Volume shadow copies 131
- Allocating disk space 132
- Identifying the storage area 133
- Mounted drives 134
- Managing shadow copies 134
- Set schedules 136
- Disabling shadow copies 138
- SMB shadow copies 140
- NFS shadow copies 141
- Recovery of files or folders 141
- Recovering a folder 142
- Shadow Copy Transport 143
- Folder and share management 144
- File server management146 146
- File server management148 148
- Share management 150
- Defining Access Control Lists 151
- Storage reports 153
- Antivirus 153
- Security 154
- More information 154
- B Print services 155
- Print services management 156
- Print queue creation 157
- Driver updates 158
- Best practices 159
- Troubleshooting 160
- MSNFS Features 161
- MSNFS use scenarios 162
- Administering MSNFS 163
- Server for NFS 163
- User Name Mapping 168
- Print services for UNIX 170
- Adding local NetWare users 176
- Managing NCP volumes (shares) 177
- Print Services for NetWare 178
- Additional resources 179
- Print services for Macintosh 180
- Class A equipment 183
- Class B equipment 183
- Laser compliance 184
- European Union notice 185
- BSMI notice 186
- Japanese notice 186
- Korean notice A&B 186
- Battery replacement notice 187
- Power cords 187
- Japanese power cord notice 188
- Electrostatic discharge 188
- Czechoslovakian notice 188
- Danish notice 189
- Dutch notice 189
- English notice 189
- Estonian notice 190
- Finnish notice 190
- French notice 190
- German notice 190
- Latvian notice 191
- Greek notice 191
- Hungarian notice 191
- Italian notice 191
- Lithuanian notice 192
- Polish notice 192
- Portuguese notice 192
- Slovakian notice 193
- Slovenian notice 193
- Spanish notice 193
- Swedish notice 193
- Glossary 195
- Glossary196 196
- Glossary198 198
- Index200 200
- Index202 202
- Index204 204
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