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G-44
Glossary
vaulting media
The process of storing media to a safe
and remote place. The media are
brought back to the data center when
they are needed for restore or are ready
for reuse in subsequent backups. The
vaulting procedure depends on your
company's backup strategy and policies
for data protection/reliability.
VBFS (OmniStorage specific term)
A Very Big File System is an extension
of the standard HP-UX file system on
HP-UX 9.x. It is mounted to a directory
the same way as any HP-UX file system.
In a VBFS, only the superblock, the
inode and the 'extended attribute'
information remain permanently on the
hard disk and are never migrated.
See also MFS.
verify
A function that lets you check whether
the Data Protector data on a specified
medium is readable. Additionally,
consistency within each block can be
checked if the backup was performed
with the cyclic redundancy check (CRC)
option ON.
Virtual Device Interface (MS SQL
Server 7.0/2000 specific term)
This is a SQL Server 7.0/2000
programming interface that allows fast
backup and restore of large databases.
virtual disk (HP StorageWorks
Enterprise Virtual Array specific term)
A unit of storage allocated from an HP
StorageWorks Enterprise Virtual Array
storage pool. Virtual disks are the
entities that are replicated using the HP
StorageWorks Enterprise Virtual Array
snapshot functionality.
See also original unit and replica unit.
virtual server
A virtual machine in a cluster
environment defined in a domain by a
network IP name and address. Its
address is cached by the cluster software
and mapped to the cluster node that is
currently running the virtual server
resources. This way all requests for a
particular virtual server are cached by a
specific cluster node.
volser (ADIC and STK specific term)
A VOLume SERial number is a label on
the medium to identify the physical tape
used in very large libraries. A volser is a
naming convention specific to ADIC/
GRAU and StorageTek devices.
volume group
A unit of data storage in an LVM
system. A volume group can consist of
one or more physical volumes. There
can be more than one volume group on
the system.