HP StorageWorks 2/140 embedded web server user guide - Page 157
Product, Manager, Open Systems Architecture
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Glossary 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. 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 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. Open Systems Architecture 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). open systems management server OSMS. An optional feature that can be enabled on the Director or Switch through the Product Manager application. When enabled, host control and management of the Director or Switch are provided through an Open System Interconnection (OSI) device attached to a Director or Switch port. open systems mode The mode that is used for HP or open fabrics. See also operating mode; S/390 mode(S/390 mode). embedded web server user guide Glossary-27
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