The question is a shopping question because it asks, and I quote:

> Does anyone know of any RAID cards which can be configured to check
> the parity of a redundant array every time data is read, and verify
> all writes with a read to ensure that the data on a single disk didnt
> become corrupt?

As well as:

> I am specifically looking for a controller which can verify on write
> and check pairty on read.

There is a history of [not allowing subjective shopping questions on StackExchange][1] (a rule more faithfully followed on some StackExchange sites than others). Yes, there can be a method of asking a shopping-style question that is acceptable. To quote that blog post:

> However, there is a way to ask these questions that avoids the
> inherent problems with shopping recommendations. For example, let’s
> say you wanted — as I did — to buy a point-and-shoot camera that takes
> good low light photos. [...]
> 
> Q: What’s the best low light point-and-shoot camera?
> 
> [...]
> 
> Q: How do I tell which point-and-shoot cameras take good low light photos?
> 
> [...]
> 
> The former question provides the path of least resistance: a laundry
> list of products I can buy without thinking about it too much. But
> that answer will only be valid for a year at best. The latter question
> may take some thinking, but its answer will be valid forever … or at
> least until camera technology somehow shifts beyond lenses and sensors
> as we know them today.

However, the proper way to ask a shopping question is to not ask it like an explicit shopping question, but rather as a question seeking to understand how you determine what you need.

Your question is not seeking to answer something along the lines of "How can I determine the necessary features in a storage card when my goals are thus-and-such?" Your question was explicitly seeking specific RAID cards, not methods to discover the proper technology to solve your problems.


  [1]: http://blog.stackoverflow.com/2010/11/qa-is-hard-lets-go-shopping/