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Search: Posts Made By: Ian W
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Forum: Rumours & News
12th Aug 2016, 22:10
Replies: 75
Views: 24,917
Posted By Ian W

Almost right - except I would make it a widely...

Almost right - except I would make it a widely distributed redundant system so there is no backup just a system with two (or more) identical parts sharing data and transactions with redundant copies...
Forum: Rumours & News
10th Aug 2016, 19:27
Replies: 75
Views: 24,917
Posted By Ian W

That is why you do not have 'backup systems' you...

That is why you do not have 'backup systems' you have a widely distributed fault tolerant system. Yes they are a real pain to test as Scott says above, especially the regression testing after every...
Forum: Rumours & News
10th Aug 2016, 12:54
Replies: 75
Views: 24,917
Posted By Ian W

Exactly. There is only one explanation really, ...

Exactly.
There is only one explanation really, Delta beancounters felt the cost of a fault tolerant system made it worth taking the risk of a total system failure. Yet the cost of the backup...
Forum: Rumours & News
10th Aug 2016, 11:08
Replies: 75
Views: 24,917
Posted By Ian W

There is a little more to this story. I have...

There is a little more to this story.
I have been told that in order to reduce stock holding at the airport Cincinnati had only a small supply of deicer and when snow/ice/freezing weather was...
Forum: Rumours & News
10th Aug 2016, 10:49
Replies: 75
Views: 24,917
Posted By Ian W

From the Yahoo Link above: And here we...

From the Yahoo Link above:



And here we have the fundamental fault in the design. The 'backup' system should be operating all the time as a part of the live system. To all intents and...
Forum: Rumours & News
8th Aug 2016, 20:59
Replies: 75
Views: 24,917
Posted By Ian W

This is the fact that makes no sense. If you are...

This is the fact that makes no sense. If you are running a global system and it must be up and running 24/7 then you must not have all your systems in one place. Not only should there be a separate...
Forum: Rumours & News
8th Aug 2016, 18:28
Replies: 75
Views: 24,917
Posted By Ian W

I wonder how long it will be for Delta to have a...

I wonder how long it will be for Delta to have a redundant system set up say at MSP? If they had done that the failure could have been transparent to the airline apart from the people directly...
Showing results 1 to 7 of 7


 
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