HP ProLiant Storage Server User Guide (440584-001, February 2007)

Shadow Copies for Shared Folders preserves the permissions set in the access control list (ACL) of the
original folders and files. Consequently, users can only access shadow copies for shares to which they
have access. In other words, if a user does not have access to a share, he also does not have access to
the share's shadow copies.
The Shadow Copies for Shared Folders client pack installs a Previous Versions tab in the Properties
window of files and folders on network shares.
Users access shadow copies with Windows Explorer by selecting View, Copy,orRestore from the
Previous Versions tab. (See Figure 11). Both individual files and folders can be restored.
Figure 11 Client GUI
When users view a network folder hosted on the storage server for which shadow copies are enabled,
old versions (prior to the snapshot) of a fi le or directory are available. Viewing the properties of the file
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 o p en 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 ac cess 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 [e-mail]-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.
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