It's as in "tinpot", British slang meaning low value or little importance.
For many the detail of the hardware does not matter Eg. "Once the packet hits the tin it's no longer my problem". Also talking about a £50k pile of servers as just "tin that needs to be racked" could be a backhanded way of signalling confidence in the task, where others might be intimidated by the cost of the equipment they are dealing with.
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Why 'tin' though? Do you mean tin as in the element tin? Why tin specifically? There's hardly any tin in a server is there? Except for the solder.
It's as in "tinpot", British slang meaning low value or little importance.
For many the detail of the hardware does not matter Eg. "Once the packet hits the tin it's no longer my problem". Also talking about a £50k pile of servers as just "tin that needs to be racked" could be a backhanded way of signalling confidence in the task, where others might be intimidated by the cost of the equipment they are dealing with.