Hitachi 9900 manual Glossary

Glossary

CHA

Channel Host Adapter.

CHIP

Channel Host Interface Processor.

C–HSN

Cache Hierarchical Star Network.

CHT

Channel adapter Tachyon (for Fibre Channel interfaces).

Client/Server Architecture

Client/Server Architecture is a network architecture in which each computer or processor on the network is either a client or a server. Servers are powerful computers or processors dedicated to managing disk drives (file servers), printers (print servers), or network traffic (network servers). Clients are PCs or workstations on which users run applications. Clients rely on servers for resources, such as files, devices, and even processing power.

CMA

Control Memory Adapter.

CM–HSN

Control Memory, Hierarchical Star Network.

Consistency Groups

A software copy technique of suspending multiple volumes at the same time.

Control Frame

The Disk Controller or control frame is the center cabinet of the Hitachi Freedom Storage™ Lightning 9980V™ system, housing the channel switch, cache, power supplies, batteries, and host interface cards.

CPU

CPU is an acronym for Central Processing Unit. It can refer to either a processor chip, such as the Sun™ SPARC™ or the Intel® Pentium®, or to a processor chip or chips and support circuitry on a CPU board.

CSW

Cache Switch. A specially designed crossbar switch for use in the Hitachi Freedom

Storage™ Lightning 9900™ V Series. These are not Fibre Channel switches.

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