Complainance Archiving in Exchange 2010

Hi Everyone,

Thanks for your support.

We are looking for a e-mail archiving solution to archive for complaince with Exchange 2010 where all the e-mails sent and received should be archived. We want to keep these e-mails for 10 years. Also, the folder structure of the mailbox should be replicated to the archiving solution. Our mailbox growth is about 1 GB/month approx and also the performace of the archiving solution should be good when users try to access their old emails from the archive.