
Glossary 45
glossary
Adr address
ATM asynchronous transfer mode
BC Business Copy XP
CA Continuous Access XP
CCW channel command word
CHF channel fibre
CNT Computer Network Technology Corporation
CU control unit
DASD direct access storage device
DB2 Database 2
DFSMS Data Facility Storage Management Subsystem
DWL duplex write line
ESCON Enterprise System Connection (IBM trademark for optical channels)
ESCD ESCON director
ExSA extended serial adapters
FC CA Fibre Channel Continuous Access XP
I/O input/output
IBM International Business Machines Corporation
IMPL initial microprogram load
IMS Information Management System
IOCDS I/O configuration dataset
LAN local-area network
LCP local control port
LED light-emitting diode
LUN logical unit (also called device emulation or device type)
MCU main control unit
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