LS

Location Server

LTO

Linear Tape-Open. A half-inch open tape technology developed by IBM, HP

 

and Seagate.

MAC

Mandatory Access Control

managed object

A programming data structure that represents an HPSS system resource. The

 

resource can be monitored and controlled by operations on the managed

 

object. Managed objects in HPSS are used to represent servers, drives,

 

storage media, jobs, and other resources.

MB

Megabyte (220)

metadata

Control information about the data stored under HPSS, such as location,

 

access times, permissions, and storage policies. Most HPSS metadata is

 

stored in a DB2 relational database.

method

A Java function or subroutine

migrate

To copy file data from a level in the file’s hierarchy onto the next lower level

 

in the hierarchy.

Migration/Purge Server

An HPSS server responsible for supervising the placement of data in the

 

storage hierarchies based upon site-defined migration and purge policies.

MM

Metadata Manager. A software library that provides a programming API to

 

interface HPSS servers with the DB2 programming environment.

mount

An operation in which a cartridge is either physically or logically made

 

readable and/or writable on a drive. In the case of tape cartridges, a mount

 

operation is a physical operation. In the case of a fixed disk unit, a mount is a

mount point

logical operation.

A place where a fileset is mounted in the XFS and/or HPSS namespaces.

Mover

An HPSS server that provides control of storage devices and data transfers

 

within HPSS.

MPS

Migration/Purge Server

MRA

Media Recovery Archive

MSSRM

Mass Storage System Reference Model

MVR

Mover

NASA

National Aeronautics and Space Administration

Name Service

The portion of the Core Server that providesa mapping between names and

 

machine oriented identifiers. In addition, the Name Service performs access

name space

verification and provides the Portable Operating System Interface (POSIX).

The set of name-object pairs managed by the HPSS Core Server.

NERSC

National Energy Research Supercomputer Center

NLS

National Language Support

HPSS Installation Guide

July 2008

Release 6.2 (Revision 2.0)

250

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IBM HPSS manual Hpss Installation Guide July Release 6.2 Revision 250, Mac