McDATA 316095-B21 - StorageWorks Edge Switch 2/24 User Manual page 288

Glossary
offline diagnostics
offline sequence
offline state
online diagnostics
online state
Open Systems
Architecture
open systems
management server
g-30 EFCM Basic User Manual
O
original equipment
OEM See
Referring to data stored on a medium, such as tape or even paper,
offline
that is not available immediately to the user.
Diagnostics that only operate in stand alone mode. User operations
cannot take place with offline diagnostics running.
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.
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
offline sequence.
OLS See
Referring to data stored on the system so it is available immediately
online
to the user.
Diagnostics that can be run by the customer engineer while the
operational software is running. These diagnostics do not impact user
operations.
When the switch or director is in the online state, all of the unblocked
ports are allowed to log into the fabric and begin communicating.
Devices can connect to the switch or director if the port is not blocked
and can communicate with another attached device if both devices
are in the same zone, or if the default zone is enabled. Contrast with
offline state.
OSI. A model that represents a network as a hierarchical structure of
functional layers. Each layer provides a set of functions that can be
accessed and used by the layer above. Layers are independent, in that
implementation of a layer can be changed without affecting other
layers (D).
OSMS. An optional feature, when enabled, host control and
management of the director or switch are provided through an Open
manufacturer.
online state.