Filter
Top Products
or folder presents users with the folder or file history—a list of read-only, point-in-time copies of the file or
folder contents that users can then open and explore like any other file or folder. Users can view files
in the folder history, copy files from the folder history, and so on.
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:M M:SS. To prevent common tools from needlessly enumerating the
pseudo-subdirectories, the name of each pseudo-subdirectory begins with the dot character, thus
rendering i
thidden.
The followi
ng example shows an NFS share named “NFSShare” with three shadow copies, taken on
April 27, 28
,and29of2003at4a.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 s ystem. 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 d
irectory view accordingly. Clients then c apture the updated view the next time they issue a
directo
ry 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 fr om all of these scenarios by accessing shadow copies. There ar e separate steps
for accessing a file compared to accessing a folder.
Recove
ring a deleted file or folder
To reco
ver 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 fi le is selected.
3. Right
-click, select Properties from the bottom of the menu, a nd then click the Previous Versions tab.
4. Sele
ct 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.
6. Clic
k Restore to restor e the file or folder to its original location. Click Copy... to allow the placement
of t
he file or folder to a new location.
HPProLiantDL380G5StorageServer
71