We have a requirement to change the domain membership of a file server but permissions of files stored on the server must be retained with matching groups on the destination domain.
I realise there are several 3rd party utilities which would achieve this but these are cost prohibitive and so are not a viable option.
The main problem is that there are multiple terrabytes of data, millions of files and hundreds of groups to account for.
I know it's asking a lot but was wondering if anyone had any experience of doing something like this without using 3rd party software (which I know would make things a lot easier). I'm obviously not looking for a step by step guide, just an idea of an approach to take.
Thanks