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MQSeries.net Forum IndexIBM MQ Installation/Configuration SupportIn-Place vs Parallel Migration

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PBS12
PostPosted: Tue Jun 02, 2020 6:04 am Post subject: In-Place vs Parallel Migration Reply with quote

Newbie

Joined: 12 Nov 2018
Posts: 9

What would be the best Migration Strategy? In-Place vs Parallel?

What would be real challenges if we do In-Place migration from IIB 9 to 10 And MQ 8 to MQ9?
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bruce2359
PostPosted: Tue Jun 02, 2020 6:09 am Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 8715
Location: US: west coast, almost. Otherwise, enroute.

Rather than asking complete strangers, what benefits and risks do you see from either/both of these?
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Vitor
PostPosted: Tue Jun 02, 2020 7:11 am Post subject: Re: In-Place vs Parallel Migration Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 25995
Location: Texas, USA

PBS12 wrote:
What would be the best Migration Strategy? In-Place vs Parallel?


There are a number of factors to consider. If there was a "best" strategy, there wouldn't be 2 strategies.

PBS12 wrote:
What would be real challenges if we do In-Place migration from IIB 9 to 10 And MQ 8 to MQ9?


Going back to the previous version if it goes sideways? Maybe?
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gbaddeley
PostPosted: Tue Jun 02, 2020 4:50 pm Post subject: Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2126
Location: Melbourne, Australia

In-Place requires a really solid backout strategy that has been tested, and confidence that non-serious issues can be investigated and remediated on the fly.

Parallel requires confidence that the old and new environments can process workloads in exactly the same manner, and one or the other environment (or parts of them) can be switched off or switched on with no impact.

Also, the business system end-points need assess the risk and agree to your chosen strategy. Involve them in the decision making. Be prepared to explain and justify all the technical considerations and decisions.
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fjb_saper
PostPosted: Tue Jun 02, 2020 7:40 pm Post subject: Reply with quote

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Joined: 18 Nov 2003
Posts: 20305
Location: LI,NY

I would not try in place, because from where you come from, there's probably also an OS upgrade involved...
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