Extend Volumes Using Disk Management; Volume Shadow Copies - HP StoreEasy 1000 Administrator's Manual

You extend a volume to:
Increase raw data storage
Improve performance by increasing the number of spindles in a logical drive volume
Change fault-tolerance (RAID) configurations
For more information about RAID levels, see the Smart Array Controller User Guide, or the
document titled Assessing RAID ADG vs. RAID 5 vs. RAID 1+0. Both are available at the Smart
Array controller web page or at www.hpe.com/info/enterprise/docs.

Extend volumes using Disk Management

The Disk Management snap-in provides management of hard disks, volumes or partitions. It can
be used to extend a dynamic volume only.
NOTE: Disk Management cannot be used to extend basic disk partitions.
Guidelines for extending a dynamic volume:
Use the Disk Management utility.
You can extend a volume only if it does not have a file system or if it is formatted NTFS.
You cannot extend volumes formatted using FAT or FAT32.
You cannot extend striped volumes, mirrored volumes, or RAID 5 volumes.
For more information, see the Disk Management online help.

Volume shadow copies

NOTE: Select HPE StoreEasy 1000 Storage can be deployed in a clustered as well as a
non-clustered configuration. This chapter discusses using shadow copies in a non-clustered
environment.
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, an HPE StoreEasy 1000 Storage system 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:
Recover files that were accidentally deleted. Previous versions can be opened and copied
to a safe location.
Recover from accidentally overwriting a file. A previous version of that file can be accessed.
Compare several versions of a file while working. Use previous versions to compare changes
between two versions of a file.
Shadow copies cannot replace the current backup, archive, or business recovery system, but
they can help to simplify restore procedures. Because a snapshot only contains a portion of the
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