Despite all document management and collaboration solutions, e-mail has established itself for a long time as the standard communication tool for passing on important information in companies. More than 145 billion e-mails are sent daily - the majority of electronic mail is of a business nature and contains important documents and company-relevant information. This makes it all worse for the managers and employees concerned if this material can no longer be accessed due to a shutdown or a breakdown of the mail server used. Many companies use Microsoft's Exchange Server based on Windows Server for e-mail communication. Despite the high reliability and performance of the Microsoft product, the following problems and requirements arise. After an Exchange crash, e-mail communication can no longer be accessed, the mail server is to be migrated into a new IT environment and only selected employee or department mailboxes are to be transferred. Or an employee has accidentally deleted an important e-mail and can no longer restore it using Windows on-board resources. In all cases, an extensive process is usually required that gives the IT department the choice either to completely shut down the Exchange server to solve the problem or to rely on an identical recovery server. Both variants cost the company and IT staff a lot of time, money and nerves.