System information

Glossary
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Glossary
N_Port ID See node port identifier.
NV-RAM See nonvolatile random access memory.
O
octet An 8-bit quantity, often called a byte or word. An octet can equal a
byte as long as the byte equals eight bits. See also
byte.
OEM See original equipment manufacturer.
offline Referring to data stored on a medium, such as tape or even paper,
that is not available immediately to the user.
offline diagnostics Diagnostics that only operate in stand alone mode. User operations
cannot take place with offline diagnostics running.
offline sequence OLS. (1) Sequence sent by the transmitting port to indicate that it is
attempting to initialize a link and has detected a problem in doing so.
(2) Sequence sent by the transmitting port to indicate that it is offline.
offline state When the switch or director is in the offline state, all the installed
ports are offline. The ports transmit an offline sequence (OLS) and
they cannot accept a login got connection from an attached device.
Contrast with
online state.
ohm A unit of electrical resistance equal to that of a conductor in which a
current of one ampere is produced by a potential of one volt across
the conductor terminals (D).
OLS See offline sequence.
online Referring to data stored on the system so it is available immediately
to the user.
online diagnostics Diagnostics that can be run by the customer engineer while the
operational software is running. These diagnostics do not impact user
operations.
online state When the switch or director is in the online state, all of the unblocked
ports are allowed to log in to the fabric and begin communicating.
Devices can connect to the switch or director if the port is not blocked