HP ProLiant DL380 G5 Data Protection Storage Server Administration Guide (434184-001, September 2006)

File sharing ele
ments
The stor age ser
ver suppor ts several file sharing protocols, including Distributed File System (DFS), Network
File System (NF
S), File Transfer Protocol (FTP), Hypertext Transfer Protocol (HT T P), and Microsoft Ser ver
Message Block (SMB). On each folder or logical storage element, different file sharing p rotocols can be
enabled using specific network names for access across a network to a variety of clients. Permissions can
then be granted to those shares based on users or groups of users in each of the file sharing protocols.
Volume Shadow Copy Service overview
The Volume Shadow Copy Ser vice (VSS) provides an infrastructure for creating point-in-time snapshots
(shadow c opies) of volumes. VSS supports 64 s hadow copies per volume.
Shadow Copies of Shared Folders resides within this infrastructure, and helps alleviate data loss by
creating shadow copies of files or folders that are stored on network file shares at pre-determined time
intervals. In essence, a shadow copy is a previous version of the file or folder at a specificpointintime.
By using shadow copies, a storage server can maintain a set of previous versions of all files on the
selected volumes. End users access the file or folder by using a separate client add-on program, which
enables them to view the file in Windows Explorer.
Shadow copies should not replace the current backup, archive, or business recover y system, but they
can help to simplify restore procedures. For example, shadow copies cannot protect against data loss
due to m edia failures; however, recovering data from shadow copies can reduce the number of tim es
needed to restore data from tape.
Using storage elements
The last step in creating the element is determining its drive letter or mount point and formatting the
element. Each elem ent created can exist as a drive letter, assuming one is available and/or as mount
points off of an existing folder or drive letter. Either method is supp orted.
Formats c onsist of NTFS, FAT32, and FAT. All three types can be used on the storage server. However,
VSS can only use volumes that are NTFS formatted. Also, quota management is possible only on N TFS.
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Storage management overview