Siemens SIMATIC IPC847D - Page 216

Glossary
SIMATIC IPC847D
216 Operating Instructions, 01/2014, A5E32997454-AA
WLAN
W
ireless
LAN
is a local network that transmits data via radio waves, infrared light or another
wireless technology. Wireless LAN is mainly used for mobile computer applications in office
or factory environments.
ZMM
Z
ero
M
aintenance Cache Protection
M
odule is a functional unit of the SAS Raid controller
that stores the data in the cache of the controller in the case of a voltage failure. This
functional unit is maintenance-free.