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Managing the AMASS File System
6-00028-01 Rev A Operational Tasks 2-3
Database and Journal Backups
File System Database—The File System Database contains
tables of attributes—or metadata—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 default location of the Database is in /usr/filesysdb.
The File System Database tells AMASS where data is located
on the media archived in your library (or where data is located
on offline media). The following figure illustrates the concept
of how the Database maps the file system to the volumes in the
library.
Journal—The Journal is a transaction log for the AMASS
Database.
The default location of the Journal is in
/usr/filesysdb/journal. Typically, this is a symbolic link
pointing to a separate physical disk to keep the Journal on a
different disk from the File System Database.
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