HP StorageWorks Enterprise Virtual Array 3000/5000 User Guide VCS 3.x (5697-5480, March 2006)

Gb Gigabit. A measurement of the rate at which the transfer of bits of data
occurs. Sometimes referred to as Gbps. Nom inally, a Gb is a transfer rate of
1,000,000,000 (10
9
)bitspersecond.
For Fibre Channel transceivers or FC loops the Gb transfer rates are:
• 1 Gb is a transmission rate of 1,062,500,000 bits per second.
• 2 Gb is a transmission rate of 2,125,000,000 bits per second.
GB Gigabyte. A unit of me asurement defining either:
• Adatatransferrate.
• A storage or memory capacity of 1,073,7 41,824 (2
30
)bytes.
See also GBps.
Gbps Gigabits per second. A m easurement of the rate at which the transfer of bits
of data occurs. Nominally, a Gb is a transfer rate of 1,000,000,000 (10
9
)
bits per second.
See also Gb.
GBps Gigabytes per second. A me asurement of the rate at which the transfer of
bytes of data occurs. A GBps is a transfer rate of 1,000,000,000 (10
9
) bytes
per second.
See also GB.
Giga (G) The notation to represent 10
9
or 1 billion (1,000,000,000) .
gigabaud An encoded bit transmission rate of one billion (10
9
)bitspersecond.
gigabit See Gb.
gigabit per second See Gbps.
graphical user
interface
See GUI.
GUI Graphical User Interface. Software that displays the status of a storage system
and allows its user to control the storage system.
HBA Host Bus Adapter.
See also FC A.
host A computer that runs user applications and uses (or can p otentially use) one or
more virtual disks created and presented by the controller pair.
Host Bus Adapter See FCA.
host computer See host.
host link indicator The HSV Controller display that indicates the status of the storage system Fibre
Channel links.
host ports A connection point to one or more hosts through a Fibre Channel fabric. A
host is a computer that runs user applications and that uses (or can potentially
use) one or more of the virtual d isks that are created and presented by the
controller pair.
host-side ports See host ports.
hot-pluggable A metho d of element replacement whereby the complete system remains
ope
rational d uring element removal or inser tion. Replacement does not interrupt
dat
a transfers to other elements.
hub A communications infrastructure device to which nodes on a multi-point bus
or loop are physically connected. It is used to improve the manageability of
physical cables.
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Glossary