Volume Shadow Copies - HP ProLiant DL380 G5 Administration Manual

• Use the DiskPart utility.
• To extend a basic volume, it must be formatted NTFS.
• You can only extend a basic volume onto the same disk.
• You can only extend a basic volume if it is followed by contiguous unallocated space.
Complete help is available from the Windows Storage Server 2003 desktop by selecting Start > Help
and Support.
To extend a volume using DiskPart, follow these steps:
1.
Connect to the server through Remote Desktop, login, and bring up the command window.
2. Type DiskPart and press Enter.
3.
From the DiskPart command prompt, use the following commands:
a. Enter list to display all of the volumes.
b. Enter select [name of volume] (for example, DiskPart> select Volume 4) to
work against a particular volume or partition.
c.
Enter Extend. The volume is extended to the capacity of the underlying disk. To specify the
amount to extend or to extend another disk, enter extend [size=n] [disk=n], where
size is in MB.
d. Enter Exit to exit the DiskPart utility.
TIP:
When extending a basic disk, if you receive a message that there is not enough disk space to extend
the volume, it is possible to convert to dynamic, provided that there are other dynamic disks with space
available and that the storage server is not a node in a cluster. The volume can then be extended
over a set of dynamic disks.

Volume shadow copies

NOTE:
Select storage servers can be deployed in a clustered as well as a non-clustered configuration. This
chapter discusses using shadow copies in a non-clustered environment. See the Cluster Administration
chapter of this guide for additional information regarding shadow copies in a cluster.
The Volume Shadow Copy Service provides an infrastructure for creating point-in-time snapshots (shadow
copies) of volumes. Shadow Copy supports 64 shadow copies per volume.
A shadow copy contains previous versions of the files or folders contained on a volume at a specific
point in time. While the shadow copy mechanism is managed at the server, previous versions of files
and folders are only available over the network from clients, and are seen on a per folder or file level,
and not as an entire volume.
The shadow copy feature uses data blocks. As changes are made to the file system, the Shadow Copy
Service copies the original blocks to a special cache file, to maintain a consistent view of the file at a
particular point in time. Because the snapshot only contains a subset of the original blocks, the cache
file is typically smaller than the original volume. In the snapshot's original form, it takes up no space
because blocks are not moved until an update to the disk occurs.
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. Accessing previous versions of files, or shadow
copies, enables users to:
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File server management