OSX partitions wiped by NAS RAID
With the slim details you have provided, your best bet would be to seek professional data recovery assistance.

Most reputable companies will ask you what you have, what you need recovered and give you an estimate on the costs for recovery without needing to charge you for their time to understand the scope of the problem.

See:


Kroll Ontrack
Drive Savers


Both are highly capable at recovering Mac formatted media and filesystems. Additionally, they are fully professional in their skill at all other forms and format of data recovery. I've never regretted choosing either for recovery from personal up to enterprise needs.