IBM TotalStorage NAS 300, Справочник пользователя

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G
gateway. A device that acts as a router to transfer packets between networks, but occurs at the transport layer. See
also router .
GEC. See Gigabit Etherchannel .
Gigabit Etherchannel (GEC). A proprietary technology developed by Cisco that creates a team of two Gigabit
Ethernet adapters to increase transmission and reception throughput. Adapter fault tolerance is also supported by this
technology.
H
hertz (Hz). A unit of frequency equal to one cycle per second.
Note: In the United States, line frequency is 60 Hz or a change in voltage polarity 120 times per second; in Europe,
line frequency is 50 Hz or a change in voltage polarity 100 times per second.
host. (1) In TCP/IP, any system that has at least one Internet address associated with it. A host with multiple network
interfaces may have multiple internet addresses associated with it. The host can be a client, a server, or both. (2) In
Fibre Channel technology, any system that has at least one worldwide name associated with it. A host with multiple
network interfaces may have multiple worldwide names associated with it.
I
IETF. See Internet Engineering Task Force .
iLUN. See iSCSI client logical-unit number.
Internet Engineering Task Force (IETF). The task force of the Internet Architecture Board (IAB) that is responsible
for solving the short-term engineering needs of the Internet. The IETF consists of numerous working groups, each
focused on a particular problem. Internet standards are typically developed or reviewed by individual working groups
before they can become standards.
Internet Protocol (IP). A protocol that routes data through a network or interconnected networks. IP acts as an
intermediary between the higher protocol layers and the physical network.
interrupt request (IRQ). An input found on a processor that causes it to suspend normal instruction execution
temporarily and to start executing an interrupt handler routine.
IP. See Internet Protocol .
IRQ. See interrupt request .
iSCSI client logical-unit number (iLUN). A unique number that is assigned to each virtual logical unit number
(VLUN). The iLUN for a single client starts at zero and increments sequentially.
J
jumper. A connector between two pins on a network adapter that enables or disables an adapter option, feature, or
parameter value.
L
LAN. See local area network .
local area network (LAN). A network in which a set of devices is connected to one another for communication and
that can be connected to a larger network.
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NAS Gateway 300 User’s Reference