Adaptec 5325301507 Administration Guide - Page 239
NVDB NetVault Database directory, NIS Network Information Service
UPC - 753253015740
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Term Definition 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 readwrite, 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. Glossary 223