Installation guide

iSR6200 Intelligent Storage Router
Installation Guide
Glossary-4 ISR651101-00 C
G_Port
Generic port. A port that can operate as
either an E_Port or an F_Port. A G_Port
can determine operating mode at switch
port initialization, F_Port when an N_Port
attachment is determined, E_Port when an
E_Port attachment is determined. See
E_Port, F_Port, FL_Port, L_Port, N_Port,
NL_Port.
Gbps
Gigabits per second. A measure of data
transfer rates.
HA
High availability. HA refers to a system or
device that operates continuously for a
long length of time.
HBA
Host bus adapter. See adapter.
heartbeat LED
A chassis LED that indicates the router
status.
hot replaceable
Also known as hot swappable, this means
you can add new devices or remove
existing ones when the system is running.
IANA
Internet Assigned Numbers Authority
(IANA) is responsible for the global coordi-
nation of the DNS Root, IP addressing,
and other Internet protocol resources.
initiator
System component, such as a network
interface card, that originates an I/O
operation.
ioctl
Input/output control. A system call in
UNIX/Linux systems that allows an appli-
cation to control or communicate with a
device driver outside usual read/write
operations.
IP
Internet Protocol. A method by which data
is sent from one computer to another over
the Internet. IP specifies the format of
packets, also called datagrams, and the
addressing scheme.
iSCSI
Internet small computer system interface.
Protocol that encapsulates data into IP
packets to send over Ethernet connec-
tions.
iSNS
Internet simple name service (iSNS) is
used for discovery and management of
IP-based SANs.
L_Port
Loop port. Does arbitrated loop functions
and protocols. NL_Ports and FL_Ports are
examples of loop-capable ports. See
E_Port, F_Port, FL_Port, G_Port, N_Port,
NL_Port.
latency
A measure of how fast a transaction
travels through the router.
LIP
Loop initialization process. The initializa-
tion process in an arbitrated loop that
occurs when the loop is powered up or a
new device is added. One function of a LIP
is to assign addresses. All data transmis-
sion on the loop is suspended during a LIP.