Visara SCON-20L Installation - Manual (Page 19)

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Chapter 3. Configuring the SCON
For a complete description of the configuration process and information on all of
the SCON configuration panels refer to the SCON-20L/22L/25L/28L/3074
Configuration Manual, or the SCON-3074 Configuration Manual.
For a complete description of the feature activation disk installation process, refer to the
LINCS Central Control Manual.
The SCON is licensed for the number of CU definitions it can support. The SCON-20L
comes with, and is limited to 3 LPAR support. The base SCON-22L supports four CU
through a single ESCON interface. If additional CU definitions are desired, Extended
ESCON CUI Feature Activation Disks (FADs) must be installed on the SCON-22L unit
to increase the number of CU images that can be supported to 16. The SCON-25L
supports 16 CU images through each of one or two ESCON adapters. The SCON-28L
supports up to 20 CU images through each of one or two ESCON adapters, expandable
to 64 per ESCON through FADS. The SCON-3074 supports 48 CU images per ESCON
interface.
Three different Extended ESCON CUI license FADs exist, and multiple Extended CUI
FADs may be installed to increase the support to the number supported by the SCON.
FAD increments come in values of 1 CUI, 4 CUI, and 16 CUI.
Each CU definition on the SCON is associated to a specific CNTLUNIT definition assigned
to a single LPAR.
Configuring the Host Interface
You must configure at least one of the following Line Options/ESC (or Line Options/ESX)
panels on the SCON for each LPAR that you need to connect to. There are two ‘Protocol’
options to choose from. It is strongly recommended that you use the ‘Non-SNA with
Channel Path Filter’ option. Using the Channel Path Filter, you can specify which
CNTLUNIT definition on the host this panel is to communicate with. Opting to use the
‘Non-SNA’ protocol option requires that you set a filter in the HCD (by defining the
Explicit Device Candidate List) to prevent multiple LPARs from competing for the
same SCON resource. An example of both protocol options will follow. You must be
consistent on which protocol is selected in configuration (you can not mix the two
options).
Note that the configuration process may allow you to configure more CU panels than
you have license to support. You will be advised of any CU license deficit at the end of
the configuration process when you attempt to save the configuration.