AMASS Overview

IPI

Intelligent Peripheral Interface. A high-performance, general-purpose parallel peripheral interface. The intent of the IPI is to isolate the host, both hardware and software, from changes in peripherals by providing a “function generic” command set to allow the connection of multiple types of peripherals (disks, printers, and tapes.)

J

Journal

The Journal tells AMASS what transactions—whatentries—have acted upon a file stored on a volume in a library. It is a daily diary of logged events. The Journal’s default location in UNIX is /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.

jukebox

A storage device for data containing one or more drives. Usually, media is loaded manually. In the AMASS books, the word library is a generic word that denotes a jukebox or standalone drive. See also library and standalone drives.

L

label

A tag affixed to media used for identification. For example, a bar code label is used by a robotic device to insure the robot is moving the proper media. A shelf label with human-readable information has the same purpose.

library

A storage device for data containing one or more drives. Usually, media is loaded by a robotic (automated) picker. See also jukebox and standalone drives.

M

mailbox

An opening on the front of a library where media is loaded into the library and unloaded to the outside world, without opening the actual library. This protects the inside of the library from dust and dirt. Also known as a mailslot.

media

A storage object that, when mounted in a drive, is used for read and write operations. See also volume. Media types include:

•Tape

GL-6

Glossary

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