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AMASS Overview
6-00026-01 Rev A Online Archiving with AMASS 1-7
The following figure illustrates the concept of how the File
System Database maps the file system data to the volumes in
the library.
Faster Performance Because the File System Database is resident on the server’s
hard disk, utilities and system calls operate quickly because
they access the Database instead of the actual files on the
library.
Basic commands such as directory listings (ls), changing the
working directory (cd), and even searching through part or all
of the file system for files of given attributes (find), operate on
the File System Database—not the volumes in the library.
Less Media
Contention
A secondary benefit of the disk-resident File System Database
is less media contention in the library when multiple users are
accessing the AMASS file system. Because only the actual read
and write system calls need to access the library, more
operations can be completed without waiting for media
changes.
Volumes contain “real” data.
The File System Database contains metadata,
which includes the directory structure, file attributes,
media information, and storage information.
Inodes map the metadata to “real”
data found on the media.
UNIX Server
AMASS
File
System
Database
Inodes
Inodes