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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
logical operation.
mount point
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
verification and provides the Portable Operating System Interface (POSIX).
name space
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