Transcript Toolbox Mirror

Effective Distributed Learning
Toolbox Mirror -Overview
background
Toolbox is an e-Learning toolset that provides
advanced tools for the delivery of e-Learning
Toolbox provides a set of standard delivery
frameworks which developers can use to embed their
learning content
Alternatively, developers can build or have built,
there own custom frameworks using the Toolbox
tools and security functions to manage and support
the environment
Toolbox uses an SQL database as its data store for all
management and transactional information regarding
e-Learning activities
the need for Mirror
In many networks, delivery of eLearning is required at multiple
locations
Where bandwidth issues occur
in these networks major
problems can exist for learners
who must access web sites
across the network pipes
One solution is to provide eLearning servers at each major
delivery location, however this
causes the need for the data
and content to be replicated at
each site
what Mirror does
Toolbox Mirror provides an
automated ‘mirror’ solution for such
an environment
Mirror allows one database and one
content library to be spread across
a network of e-Learning servers
When content is changed an index
service records the change and
distributes the changed content to
all the other Mirror servers
When a database change occurs it
is distributed and applied to the
databases of all the other Mirror
servers
roles for Mirror servers
Master
In a Toolbox Mirror network every web
server has identical web page directories
and identical SQL databases
There is always one Master server in a
network, the Master is the source of all
changes to the web pages and to
management information in the database
Mirror
There can be many Mirror servers in the
network. Each Mirror server can record
user generated changes to the database
and new uploaded user files, each are
sent to the Master for distribution to the
other Mirror servers
configuring Mirror options
Master
Network administrators must be able to
configure Mirror options to address their
network constraints
Administrators can set:
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Mirror
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how often directories are checked on the Master
server for changes and sent to the Mirrors
how often each database table is checked for
changes and sent to the Mirrors
what locations should be connected to which
server when logging on so that users go to the
server that gives them the fastest response and
not use Network bandwidth
implementing Mirror
Choose the location for your Master server
based on:

Master
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A central position in your network where Mirrors
have good connection speed to
A location that can be accessed from inside and
outside the intranet
Where technical support can access and maintain
the server
Where the majority of your online learners are
located
Choose Mirror locations based on:


Where large numbers of users are located
Where smaller numbers of users have very slow
connection to the Master and other servers
benefits from Mirror
The majority of WAN traffic
is generated by accessing
content:
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
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Mirror servers located on LANs
provide users fast access
without any WAN usage
Interactive sites can’t cache
content as it is dynamically
generated, Mirror servers act
as a local cache, only changed
data travels across the WAN
Mirror servers provide a high
level of redundancy, if a Mirror
is down users are re-directed
to the Master server