Table of Contents
Advertisement
Appendix A
Glossary of Terms and Acronyms
attribute
attribute change
audit (security)
Bar code
BFS
bitfile
bitfile segment
Bitfile Server
BMUX
bytes between tape marks
CAP
cartridge
CDS
central log
class
Class of Service
cluster
472
When referring to a managed object, an attribute is one discrete piece of
information, or set of related information, within that object.
When referring to a managed object, an attribute change is the
modification of an object attribute. This event may result in a notification
being sent to SSM, if SSM is currently registered for that attribute.
An operation that produces lists of HPSS log messages whose record type
is SECURITY. A security audit is used to provide a trail of security-
relevant activity in HPSS.
An array of rectangular bars and spaces in a predetermined pattern (e.g.,
UPC symbol)
Bitfile Server
A logical string of bits unrestricted in size or internal structure. HPSS
imposes a size limitation in 8-bit bytes based upon the maximum size in
bytes that can be represented by a 64-bit unsigned integer.
An internal metadata structure, not normally visible, used by the Bitfile
Server to map contiguous pieces of a bitfile to underlying storage
provided by a Storage Server.
An HPSS server that provides a logical abstraction of bitfiles to its clients.
Block Multiplexer Channel
The number of data bytes that are written to a tape virtual volume before
the Tape Storage Server requires a tape mark on the physical media.
Cartridge Access Port
A physical media container, such as a tape reel or cassette, capable of being
mounted on and dismounted from a drive. A fixed disk is technically
considered to be a cartridge because it meets this definition and can be
logically mounted and dismounted.
Cell Directory Service
The main repository of logged messages from all HPSS servers enabled to
send messages to the Log Daemon.
A type definition in Java. It defines a template on which objects with
similar characteristics can be built, and includes variables and methods
specific to the class.
A set of storage system characteristics used to group bitfiles with similar
logical characteristics and performance requirements together. A Class of
Service is supported by an underlying hierarchy of storage classes.
The unit of storage space allocation on HPSS disks. Each disk virtual
volume is divided into a number of clusters such that the number is less
than 16384. The smallest amount of disk space that can be allocated from
September 2002
HPSS Installation Guide
Release 4.5, Revision 2
Advertisement
Table of Contents
