IBM TotalStorage SAN140M, Installation And Service Manual

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SAN140M Installation and Service Manual 358
is provided through SC duplex optical transceivers. Contrast with fibre
port module card and universal port module card .
GHz See gigahertz .
gigabit A unit of measure for data storage, equal to 134,217,728 bytes. A
gigabit is generally approximated as one eighth of a gigabyte.
gigabit interface
converter
A removable port connector (serial DB9, serial HSSDC, or fiber-optic)
that converts an electrical data stream to an optical or amplified
electrical data stream. GBICs provide port connectivity for the
ES-1000 switch. Contrast with
SC duplex connector and small form factor
pluggable transceiver .
gigabyte
A unit of measure for data storage, equal to 1,073,741,824 bytes. A
gigabyte is generally approximated as one billion bytes.
gigahertz One billion cycles per second (Hertz).
GLS card A G_Port, Longwave laser, Singlemode fiber variant of an ED-5000
Director GPM card. The card provides four longwave laser port
connections. Contrast with
GSM card and GXX card .
GPM card
See generic port module card .
G_Port
See generic port .
graphical user
interface
A visually oriented interface where the user interacts with
representations of real-world objects displayed on the computer
screen.
GSM card A G_Port, Shortwave laser, Multimode fiber variant of an ED-5000
Director GPM card. The card provides four shortwave laser port
connections. Contrast with
GLS card and GXX card .
GUI See graphical user interface .
GXX card A G_Port, miXed laser, miXed fiber variant of an ED-5000 Director
GPM card. The card provides three shortwave laser port connections
and one longwave laser port connection. Contrast with
GLS card and
GSM card .