Visara CCA-3074 Planning Guide - Manual (Page 18)

Chapter 2. Planning for Your Installation
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Number of Consoles Required for Each LPAR: Normally
there is a minimum requirement to have at least two consoles
defined to each LPAR, to provide redundancy. Sometimes the
number is actually higher to support additional console users or to
subdivide the messages. With the Session Sharing feature of the
CCA-3074 you may also be able to define fewer consoles than
you would otherwise need, by allowing multiple users to share a
single console session.
Need/Desire to Use One Console for Multiple LPARs: It
might be needed to provide console support for multiple LPARs
on one desktop. The CCA-3074 can be configured to allow
multiple TN3270 sessions to be connected from a single TN3270
client. The ability to support multiple sessions on the client is a
function of the client software. The CSS32 Coax Subsystem is
capable of allowing up to 10 sessions to be managed from a
single coax port, including attachment to multiple CCA-3074s.
Need to Display Multiple LPARs at Once on a Display: This
is a function of the client. Visara offers TN3270 clients that may
be used to display up to 4 complete sessions on the screen at
once, and up to 10 total. Refer to the Visara 500Lx thin client
display.
Remote Access Requirement: By default, the TN3270 protocol
is capable of allowing remote access to the unit since
communication between the CCA-3074 and its clients is through
an IP connection. Additionally, the CCA-3074 supports SSL
encryption between itself and the TN3270 clients allowing safe
secure connections even through the Internet.
Hot Console Session Requirement: Sometimes it is beneficial
to have hot sessions configured on the CCA-3074. For hot
sessions, once a console has been activated, it always appears to
be powered on and active even if the client is no longer
connected. This allows a client to connect to a console session
without requiring someone to manually activate the console. This
feature works well for lights out DR sites.
Session Sharing Requirement: Sometimes it is useful to allow
multiple users to share the same console session. Multiple users
can share a session on the CCA-3074 if configured for session
sharing. This feature may aid in diagnostic and training functions.
It may also allow you to get around the 99 console limitation of
MVS environments.