HP Hitachi TrueCopy for Mainframe User Guide (T5211-96014, November 2011)

Glossary
A
ACP Array control processor.
Adr address
async Asynchronous.
ATM Asynchronous transfer mode.
C
C/T consistency time
CCHH Cylinder, cylinder, head, head.
CCI Command control interface. An HP RAID manager.
CCW channel command word
CFW Cache fast write.
CH Channel.
CL Cluster.
CNT Computer network technologies.
CU Control unit.
CYL Cylinder.
D
DASD direct access storage device
DB2 Database 2.
DFP Data facility product.
DFSMS Data Facility Storage Management Subsystem.
DFW DASD fast write.
DR/BC disaster recovery/business continuation
DSF Device support facilities.
DWL Duplex write line.
E
ELB Extended long busy.
ERC Error reporting communications.
ESA Enterprise systems architecture.
ESCD ESCON director
ESCON Enterprise systems connection An optical interface used to connect the mainframe to the control
unit; a predecessor to FICON.
F
F/M Format/Message.
G
GDPS Geographically Dispersed Parallel Sysplex
253