Quantum DXi4701, User Manual

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Glossary
412 Quantum DXi4701 User’s Guide
sent to the DXi4701 and data deduplication is performed on
data as it is ingested.
Disk A fixed set of sectors with sequential numbers starting from
zero, directly and independently accessible and mutable by
those numbers without affecting any other sector.
F
Filesystem An abstraction layered over storage devices (typically disks)
obscuring the physical details of the storage devices it supports
in favor of a presentation oriented at storing and organizing
files.
H
Host The device or devices to which the system is connected.
I
Ingest The throughput performance of data writes to the system.
L
LSU Logical Storage Unit. A logical storage entity defined under the
Symantec OpenStorage API.
N
NAS Network Attached Storage is file-level computer data storage
connected to a computer network providing data access to
network clients.
NDMP
Network Data Management Protocol is a protocol meant to
transport data between NAS devices, also known as filers, and
backup devices. This removes the need for transporting the data
through the backup server itself, thus enhancing speed and
removing load from the backup server.
O
OST OpenStorage API. An interface specific to Symantec NetBackup
and Backup Exec for writing data to disk backup appliances,
replicating it, and, in the case of NetBackup, writing data
directly to disk, under control of the backup application.