AMASS Overview

File System Database

The File System Database contains tables of attributes—ormetadata—representing the directory structure and media mounted under the AMASS file system. The metadata includes: media ID, media type, media location, ownership, and timestamp. The File System Database tells AMASS where data is located on the media archived in your library. The default location in UNIX is in /usr/filesysdb. See also inode and metadata.

G

GUI

Graphical User Interface. The human juncture between an end user and a software product. It contains a series of pictorial menus that lead a user in a task accomplished usually with a mouse, instead of a keyboard.

H

HSM

Hierarchical Storage Management. A data management strategy where data is migrated to storage in either a layered or serial method based on a set of policies. A paradigm that often controls this migration is frequency of access. For

example, the least frequently accessed files are first migrated onto fast magnetic tape which are later stored on slower optical platters. The goal for implementing an HSM strategy is to provide clients with increased space on existing disk drives. See also DataMgr™ and FileServ™.

I

inode

A programming structure that maps metadata to the “real” data found on media. See also DataMgr™ and metadata.

IP address

Central to TCP/IP communication is the IP address that allows devices to talk to each other. The IP address is a device’s logical network address consisting of a four-byte number separated by full stops, such as 128.8.14.92.

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Glossary

GL-5