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Large or small, simple or complex, all migrations
adhere to a basic set of procedures.
The amount of time each step takes depends on the scope of the project and
the customer’s time requirements. Usually, an application with a small
number of programs
written in a single language will take less time to convert and qualify,
just as a more complex migration may require additional steps. In all
cases, Datatek will identify and track each project milestone,
adeptly refocusing priorities when needed. The following list
illustrates basic Datatek migration procedures.
| Step
One
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The customer will deliver to Datatek all files needed for the
migration, including program source code, macro/shell command files,
data files, etc. Datatek expects all program source files to compile
cleanly in the
original environment upon delivery. Customer development may
continue as normal.
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| Step
Two
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Datatek will evaluate the application's environment. This includes
but is not limited to the following:
- a search for platform-specific
usage (e.g., device access, system calls,
directory structure, proprietary file formats, etc.)
- in a multi-language
application, a determination of the appropriate target languages
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| Step Three
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Datatek will run its migration tools, modifying them as
necessary, against the supplied source files until
all sources compile cleanly.
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| Step Four
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The customer will evaluate the converted programs (typically, the
appearance and behavior of the application's screens). This
evaluation is usually performed at the Datatek
site.
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| Step Five
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Datatek will deliver the converted application to be installed on the
customer's target system.
Datatek, with input from the customer, will then
set up the application's environment for testing, including the
installation of any Datatek-provided software. Datatek will convert
any data files as necessary.
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| Step Six
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The customer will qualify the converted application. Datatek will
resolve all conversion-related errors as they are reported.
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| Step Seven
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The customer will deliver to Datatek a final version of all relevant
files and freeze source code modification.
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| Step Eight
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Datatek will convert all program source code or macro/shell
command files that have been
modified since the original files were delivered and
return the newly converted files to the customer for final
qualification.
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| Step Nine
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The customer will make a final qualification of the converted
application.
Datatek will resolve all errors as they are reported.
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| Step Ten
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Optionally, a practice cutover may be staged to test the environment and
all associated devices. Datatek highly recommends a practice cutover.
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| Step Eleven
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Datatek and the customer will cutover
to the new system.
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Copyright © Datatek, Inc. 2011
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