5190/5194 Modular Tape Subsystem Manual

Glossary
5190/5194 Modular Tape Subsystem Manual—426878-002
Glossary-2
buffer
buffer. A block of memory or a storage device that temporarily stores data being
transferred from one device to another. The buffer compensates for the different
processing rates of the devices.
cartridge magazine. A removable plastic assembly that holds seven cartridge tapes for
automatic loading and unloading. The magazine fits inside the automatic cartridge
loader (ACL) and supplies tapes to the autoloader.
cartridge tape. A self-contained plastic shell holding a spool of chromium-dioxide-coated
tape. Tape is nested in the cartridge by a spring-loaded mechanism that exposes the
tape only when the cartridge is loaded into a drive.
cartridge tape drive. A tape drive that uses a magnetic tape, on supply and take-up reels,
completely enclosed in a plastic case. A cartridge tape drive can be used to load
system software and applications and to archive similar data.
CLASS TAPECATALOG DEFINE. A type of tape DEFINE for use with the Distributed
Systems Management/Tape Catalog (DSM/TC) operator interface (MEDIACOM).
Unlike a CLASS TAPE DEFINE, a CLASS TAPECATALOG DEFINE has catalog and
compression attributes.
cleaning cartridge. A cartridge used to clean the tape drive recording heads. A cleaning
cartridge is similar to other cartridge tapes, but it contains a cleaning ribbon instead of
magnetic tape.
Compaq NonStop Himalaya K-series servers. The set of servers in the Compaq NonStop
Himalaya range of servers having product numbers beginning with the letter “K.” These
servers run the Compaq
NonStop Kernel operating system, but they do not implement
the ServerNet architecture.
Compaq NonStop Himalaya S-series servers. The set of servers in the Compaq NonStop
Himalaya range of servers having product numbers beginning with the letter “S.”
These servers implement the ServerNet architecture and run the Compaq
NonStop
Kernel operating system.
Compaq NonStop Transaction Management Facility (TMF) subsystem. The major
component of the Compaq
NonStop Transaction Manager/MP (TM/MP) product, which
protects databases in online transaction processing (OLTP) environments. To furnish
this service, the TMF subsystem manages database transactions, keeps track of
database activity through audit trails, provides database recovery methods, and
supports online dumps. Formerly called Transaction Monitoring Facility (TMF).
Compaq Tandem Maintenance and Diagnostic System (TMDS). A diagnostic software
tool for Compaq NonStop Himalaya K-series servers that uses the maintenance and
diagnostic subsystem (MDS) to record, report, and diagnose system malfunctions.
Compaq TSM package. A software product for Compaq NonStop Himalaya S-series
servers that provides the information needed to perform functions such as querying
resources and testing, provides notification of problems on the system, and allows