Visara SCON-20L Installation - Manual (Page 13)

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Chapter 2. Planning for Your Install
use of the 3290 would be to use one of the Visara Thin Client products (1783, 1883,
500LX) or the UCT-L. These products can support up to 10 sessions, including
simultaneous full screen display of 4 sessions to different LPARs.
Planning for the Visara UCT-L
The Visara UCT-L is designed to support console sessions in a rather unique way. You
can use them to display multiple console sessions on the screen (up to 4 full screen
console sessions) through its TN3270E feature when using a monitor capable of
supporting 1280 x 1024 resolution. Unlike other TN3270E clients however, you can
optionally attach the UCT-L directly through a coax connection (fewer security issues).
The UCT-L also supports an Ethernet connection. (Visara 1783, 1883, and 500-LX
products may be attached in the same way.)
Planning for Hot Console Sessions
One of the unique features available for the SCON allows Console sessions to remain
powered on with the host LPAR, even when the client associated with the session is not
currently connected. This is referred to as a Hot Console Session. Applications for the
Hot Console Session include:
• Provide console connections for a lights out site.
• Provide a means for multiple operators, located in multiple locations to have access
to the same console session at different times.
• Provide a tool for disaster recovery from a remote location.
Depending on your choice of connections, you must plan for coax port usage, and/or
plan for an Ethernet interface on the SCON-2XL. Up to 32 TN3270E sessions are
supported by the base SCON-22L/25L/28L, 16 on the SCON-20L, 128 on the
SCON-3074. If you need to provide more TN3270E sessions, you must plan to install
optional TN3270 Feature Activation Disks (not available on the SCON-20L and SCON-
3074), and add the second ESCON adapter onto models supporting them to achieve
maximums.
Use of ESCON Channel Extenders
There is nothing unique about the SCON that should cause problems using ESCON
channel extenders. However, Visara has conducted no special testing with channel
extenders to verify their correct operation. It is the customer’s responsibility to determine
compatibility with another vendor’s channel extender, when used with the SCON.