HP 1606 FICON Administrator's Guide v6.4.0 (53-1001771-01, June 2010) - Page 17

Prohibit Dynamic Connectivity Mask PDCM and Connectivity Attributes

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FICON concepts 1 • Hardware Configuration Definition (HCD) HCD is an IBM interactive interface application that allows you to define the hardware configuration for both a processor's channel subsystem and the operating system running on the processor. • Information unit A unit of FICON data consisting of from one to four Fibre Channel frames. • Link Incident Record Registration (LIRR) The LIRR Extended Link Service (ELS) requests that the recipient add the requesting port to its list of ports that are to receive a Registered Link-Incident Report (RLIR). • Node A node is an endpoint that contains information. It can be a computer (host), a device controller, or a peripheral device, such as a disk array or tape drive. A node has a unique 64-bit identifier known as the Node_Name. The Node_Name is typically used for management purposes. • Prohibit Dynamic Connectivity Mask (PDCM) and Connectivity Attributes PDCM controls whether communication between a pair of ports in the switch is prohibited or not. Connectivity attributes control whether all the communication is blocked for a port. • Read Record Set (RRS) RRS is an XRC command issued to retrieve only record updates from disk volumes. • Registered Link Incident Report (RLIR) RLIR ELS provides a way for a node port to send an incident record to another node port. • Request Node Identification Data (RNID) RNID ELS acquires the associated node's identification data which provides configuration discovery and management purpose information. • Resource Measurement Facility (RMF) A monitoring function that gathers transaction data from the environment and generates performance reports. All Level II reports, which include port statistics, require CUP and FMS. Keep RMF active in the system 24 hours a day, and run it at a dispatching priority above that of other address spaces in the system. If you do, reports are written at the requested intervals and other work is not delayed because of locks held by RMF. FICON Administrator's Guide 5 53-1001771-01

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FICON Administrator’s Guide
5
53-1001771-01
FICON concepts
1
•
Hardware Configuration Definition (HCD)
HCD is an IBM interactive interface application that allows you to define the hardware
configuration for both a processor's channel subsystem and the operating system running on
the processor.
•
Information unit
A unit of FICON data consisting of from one to four Fibre Channel frames.
•
Link Incident Record Registration (LIRR)
The LIRR Extended Link Service (ELS) requests that the recipient add the requesting port to its
list of ports that are to receive a Registered Link-Incident Report (RLIR).
•
Node
A node is an endpoint that contains information. It can be a computer (host), a device
controller, or a peripheral device, such as a disk array or tape drive. A node has a unique 64-bit
identifier known as the Node_Name. The Node_Name is typically used for management
purposes.
•
Prohibit Dynamic Connectivity Mask (PDCM) and Connectivity Attributes
PDCM controls whether communication between a pair of ports in the switch is prohibited or
not. Connectivity attributes control whether all the communication is blocked for a port.
•
Read Record Set (RRS)
RRS is an XRC command issued to retrieve only record updates from disk volumes.
•
Registered Link Incident Report (RLIR)
RLIR ELS provides a way for a node port to send an incident record to another node port.
•
Request Node Identification Data (RNID)
RNID ELS acquires the associated node’s identification data which provides configuration
discovery and management purpose information.
•
Resource Measurement Facility (RMF)
A monitoring function that gathers transaction data from the environment and generates
performance reports. All Level II reports, which include port statistics, require CUP and FMS.
Keep RMF active in the system 24 hours a day, and run it at a dispatching priority above that of
other address spaces in the system. If you do, reports are written at the requested intervals
and other work is not delayed because of locks held by RMF.