Dell Compellent Series 30 - Manual (Page 440)

432 Storage Center 5.5 System Manager User Guide
NAT
Network Address Translation (NAT) also known as network masquerading or IP-masquerading rewrites the
source or destination addresses of IP packets as they pass through a router or firewall. Most systems using
NAT do so in order to enable multiple hosts on a private network to access the Internet using a single public
IP address. According to specifications, routers should not act in this way, but many network administrators
find NAT a convenient technique and use it widely. Nonetheless, NAT can introduce complications in
communication between hosts.
NDMP
Network Data Management Protocol is an open standard for backing up data in a heterogeneous
environment
NFS
Network File System
NIC
Network Interface Card
NPIV Mode
N_Port ID Virtualization is a prerequisite for enabling FC virtual ports. If a switch does not accept NPIV, FC
ports cannot be converted to Virtual Ports and NPIV is turned off.
NTP
The Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer systems over
packet-switched, variable-latency data networks.
NTS
Network Time Protocol (NTP) is a protocol for synchronizing the clocks of computer systems over packet-
switched, variable-latency data networks.
P
Pagepool
A pool of storage
Pagepool Alert
The first alert generated when the pagepool space consumed by volumes and Replays exceeds the
configurable pagepool alert threshold, and there is no more free disk space available for the pagepool to
consume.
Peer Controller
The peer controller is the equal of the Lead controller. In a dual controller system, both controllers share
read/write duties, thus doubling IOs. But in the event the lead controller fails, the peer controller assumes
the duties of both controllers.