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Legacy modernization - rehosting

 
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dilip_bangalore

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Joined: 29 Sep 2011
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Location: India

PostPosted: Wed Apr 18, 2012 10:55 pm    Post subject: Legacy modernization - rehosting
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Hi a

Can you please provide some information on legacy modernization concept, where the mainframe is being migrated to linux based platform. Db2 and vsam in mainframe and db2 udb database in linux. front end could be any open system.

1) In the above migration, is it the application or data that is being migrated ?
2) what is amount of work in percentage is involved in mainframe and in linux platform or in front end system.
3) looking to gain expertise knowledge in mainframe. How good is this opportunity to work in migration project, when compared to core mainframe application.
4) How complex is migration from mainframe to linux platform.
5) any eg. of connectivity tools used as interfaces.
6) How fat is the scope in learning other technology in such projects.

Kindly provide your inputs.

Best regards,
Dilip
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Bill O'Boyle

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Joined: 14 Jan 2008
Posts: 2502
Location: Atlanta, Georgia, USA

PostPosted: Wed Apr 18, 2012 11:01 pm    Post subject: Reply to: Legacy modernization - rehosting
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Everyone on this site is a Mainframer. So, responding to your question could put them out of work.

I think you should try elsewhere.... icon_rolleyes.gif
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Akatsukami

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Location: Bloomington, IL

PostPosted: Wed Apr 18, 2012 11:21 pm    Post subject: Re: Reply to: Legacy modernization - rehosting
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Bill O'Boyle wrote:
Everyone on this site is a Mainframer. So, responding to your question could put them out of work.

Oh, don't be so negative, Bill; Linux will run under z/OS (I know because my client has dumped Unix and AIX for Linux, which is free...like my cat icon_razz.gif).
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Wed Apr 18, 2012 11:44 pm    Post subject:
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Hello,

In many (most) organizations, there is some amount of integration between applications. The heavier the integration, the less likely it is to migrate a single application to some other platform.

Picking up an applicaton and simply changing platforms is NOT modernizing the application. . .

1) typically both.

2) i don't understand the question. please clarify.

3) depends on what you want to do in the future. what does "core application" mean to you?

4) depends on how big a bear you have to eat. . . How portable is the code and the data?

5) what do you want to interface?

6) once again, it depends on what has been determined necessary for success.

This is probably not something that will be quickly determined/resolved.
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dilip_bangalore

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Joined: 29 Sep 2011
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PostPosted: Thu Apr 19, 2012 12:04 am    Post subject:
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Thanks for the info scherrer,

2) Does these kind of migration project involve more work on mainframe side or linux platform side
3) please give some suggestions, as a mainframe guy with 5 years of exp.is it good to stick to only mainframe projects or work on migration projects which involve other technology. By core I meant complete mainframe application
4) as of now I dont have any idea on that. By that question I meant can a mainframe resource learn the required technology and work successfully without any difficulties, without forgetting mainframe :-)
5) how is the connectivity made between mainframe and linux based platform
6) can we return back to work in mainframe projects after working in migration projects

Thanks,
Dilip
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dick scherrer

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PostPosted: Thu Apr 19, 2012 1:07 am    Post subject:
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Hello,

2) depends on how the project is organized. . . i've worked where almost all of the work was done on the mainframe and also where as little as possible was done on the mainframe. This is something you/your management need to decide (which includes a rather complete understanding of what it would take either way.

3) in my case, learning more/newer technology has worked to my advantage. as i mentioned earlier, what you want to do long-term should be part of the decision.

4) lots of people struggle when they are forced to a new environment. they want "things" to be like the environment they already know. personally, i have always been "up" for trying the "new things".

5) there are too many ways to do this to list here. suggest you talk with your network people as well as the system support people for both platforms to learn what they will support.

6) depending on what part(s) of the migration you are involved with, you may find you still work some on the mainframe. no "going back" to worry about. if you learn more technology that your organization is going to use (more than once, unless it is a 5-year project<G>), you become more valuable to the organization.
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dilip_bangalore

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PostPosted: Fri Apr 20, 2012 1:39 pm    Post subject:
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Thanks for the info scherrer.
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dick scherrer

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PostPosted: Fri Apr 20, 2012 8:34 pm    Post subject: Reply to: Legacy modernization - rehosting
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You're welcome - good luck icon_smile.gif

d
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