HP StoreAll Storage User Manual

Page 89

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Restore operations

If a file has been deleted from a directory that has Previous Versions, the user can recover a previous
version of the file by performing a Restore of the parent directory. However, the Properties of the
restored file will no longer list those Previous Versions. This condition is due to the X9000 snapshot
infrastructure; after a file is deleted, a new file in the same location is a new inode and will not
have snapshots until a new snapshot is subsequently created. However, all pre-existing previous
versions of the file continue to be available from the Previous Versions of the parent directory.

For example, folder Fold1 contains files f1 and f2. There are two snapshots of the folder at
timestamps T1 and T2, and the Properties of Fold1 show Previous Versions T1 and T2. The
Properties of files f1 and f2 also show Previous Versions T1 and T2 as long as these files have
never been deleted.

If the file f1 is now deleted, you can restore its latest saved version from Previous Version T2 on
Fold1

.

From that point on, the Previous Versions of \Fold1\f1 no longer show timestamps T1 and T2.
However, the Previous Versions of \Fold1 continue to show T1 and T2, and the T1 and T2 versions
of file f1 continue to be available from the folder.

Windows Clients Behavior

Users should have full access on files and folders to restore them with CIFS shadow copy. If the
user does not have adequate permission, an error appears and the user is prompted to skip that
file or folder when the failover is complete.

After the user skips the file or folder, the restore operation may or may not continue depending on
the Windows client being used. For Windows Vista, the restore operation continues by skipping
the folder or file. For other Windows clients (Windows 2003, XP, 2008), the operation stops
abruptly or gives an error message. Testing has shown that Windows Vista is an ideal client for
CIFS shadow copy support. X9000 software does not have any control over the behavior of other
clients.

NOTE:

HP recommends that the share root is not at the same level as the file system root, and is

instead a subdirectory of the file system root. This configuration reduces access and other
permissions-related issues, as there are many system files (such as lost+found, quota subsystem
files, and so on) at the root of the file system.

CIFS clients

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