
A Acronyms and Abbreviations
Table 36 Acronyms and Abbreviations
CU
control unit (
logical control unit)
DASD
direct-access storage device
DFW
DASD fast write
DKA
disk adapter
DKC
array control processor
DKCMAIN
Disk Controller Main
ESCON
Enterprise S
ystem Connection (IBM trademark for optical channels)
LAN
local-area network
LDEV
logical device
LU
logical unit
LUN
logical unit number
NVS
nonvolatile storage
PC
personal c
omputer
PDEV
physical device
P-VOL
primary volume
RAID
redundan
tarray of independentdisks
SM
shared memory
SMPL
simplex
S-VOL
secondary volume
SVP
service processor
TC
Continuous Access
TCz
TrueCop
yfor Mainframe
XP24000 Performance Monitor User's Guide
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