Adaptec 5325301507 - Snap Server 4400 NAS, Руководство администратора

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Glossary 223
NAS (Network Attached Storage) Hard disk storage that is set up with its own network address
as opposed to being attached to the department computer
that is serving applications to a network's workstation users.
By removing storage access and its management from the
department server, both application programming and files
can be served faster because they are not competing for the
same processor resources. The NAS device is attached to a
local area network (typically an Ethernet network) and
assigned an IP address.
NetVault for GuardianOS
A comprehensive backup solution that is preinstalled on
SnapServers running GuardianOS 2.6 or higher to support
backup and restore operations to a local tape drive.
NFS (Network File System) A client/server application that allows a computer user to
view and optionally store and update files on a remote
computer as though they were on the user's own computer.
The user's system needs to have an NFS client and the
other computer needs the NFS server. The SnapServer is
configured as an NFS server by default.
NIS (Network Information Service) A network naming and administration system for smaller
networks that was developed by Sun Microsystems. NIS+ is
a later version that provides additional security and other
facilities. The SnapServer accepts NIS users and groups.
node Any device, including servers, workstations, or tape devices,
that are connected to a network; also the point where
devices are connected.
NVDB (NetVault Database) directory A NetVault for GuardianOS database directory stored on the
SnapServer that holds records for the media and backups
performed.
orphan A disk drive that has become disconnected from its RAID
either by accidental removal of the drive or the intermittent
failure of the drive.
parity Error correction data. RAID 5 stores equal portions of each
file on each disk and distributes parity information for each
file across all disks in the group. This distributed parity
allows the system to recover from a single disk drive failure.
Permissions A security category, such as no access, read-only, or read-
write, that determines what operations a user or group can
perform on folders or files.
PoP (Proof of Purchase) The number used to obtain a license key for an upgrade to
third-party applications.
Term Definition