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		  | PBS12 | 
			  
				|  Posted: Tue Jun 02, 2020 6:04 am    Post subject: In-Place vs Parallel Migration |   |  |  
		  | Newbie
 
 
 Joined: 12 Nov 2018Posts: 9
 
 
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				| 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 | 
			  
				|  Posted: Tue Jun 02, 2020 6:09 am    Post subject: |   |  |  
		  |  Poobah
 
 
 Joined: 05 Jan 2008Posts: 9486
 Location: US: west coast, almost. Otherwise, enroute.
 
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				| Rather than asking complete strangers, what benefits and risks do you see from either/both of these? _________________
 I like deadlines. I like to wave as they pass by.
 ב''ה
 Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live.
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		  | Vitor | 
			  
				|  Posted: Tue Jun 02, 2020 7:11 am    Post subject: Re: In-Place vs Parallel Migration |   |  |  
		  |  Grand High Poobah
 
 
 Joined: 11 Nov 2005Posts: 26093
 Location: Texas, USA
 
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	| 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?
 _________________
 Honesty is the best policy.
 Insanity is the best defence.
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		  | gbaddeley | 
			  
				|  Posted: Tue Jun 02, 2020 4:50 pm    Post subject: |   |  |  
		  |  Jedi Knight
 
 
 Joined: 25 Mar 2003Posts: 2538
 Location: Melbourne, Australia
 
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				| 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.
 _________________
 Glenn
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		  | fjb_saper | 
			  
				|  Posted: Tue Jun 02, 2020 7:40 pm    Post subject: |   |  |  
		  |  Grand High Poobah
 
 
 Joined: 18 Nov 2003Posts: 20767
 Location: LI,NY
 
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				| I would not try in place, because from where you come from, there's probably also an OS upgrade involved...  _________________
 MQ & Broker admin
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