Operating modes
– | ems Cloud | OnPremise |
---|---|---|
Requirements | No infrastructure | Own server infrastructure |
Costs | Recurring to SUBRIS | Recurring for entitlement to updates and bug fixes Attention: Don’t forget internal costs! |
Advantages | Quickly put into operation No investment costs for hardware No operating expertise (server) required | Data always accessible to the customer |
Disadvantages | Data not in-house | Investment in server hardware is required on an ongoing basis Server must be maintained by the customer Operating and backup responsibility lies with the customer |
Requirements for operation in the ems Cloud
When operating in the ems Cloud, there are no hardware requirements for the customer.
Requirements for operation on the customer infrastructure (OnPremise)

The following list is an example configuration. The exact requirements for the infrastructure are determined by the customer through parameters such as reliability etc.
Infrastructure requirements
Database server
The database server contains the central database of the ems system. Special users are also set up on the database server to enable access for the various programs and update systems.
- SQL Server 2012 (or newer)
- Database size approx. 300 MB per year
The Express Edition is available for up to 20 users, after that the Standard Edition is required
Document storage
The document repository contains the documents that are created as files in the ems system. All documents are integrated by the ems system and the user has no access to the direct data.
- Fileshare under NTFS with access by service users
The storage requirement depends on the use
Websites
- Windows Server 2012 R2 (or newer)
- IIS (included in Windows Server)
- Storage space for websites approx. 200MB
Depending on the availability requirements, an NLB system should be used to distribute the load.
If external access to the websites via a proxy is not possible, an additional dedicated web server can be placed in the DMZ.
Application server
- Windows Server 2012 R2 (or newer)
- IIS (included in Windows Server)
- Microsoft .net 4.0 Framework
- Crystal Reports Runtime 13
The application server can optionally be operated on the same server as the websites.
Connections
- External DNS entry and certificate for the use of ems Mobile
- External DNS entry URL and certificate for using ems Web via the Internet
- Access to the e-mail server with authorizations to send e-mails
Obligations and tasks of the customer
Licensing
The customer shall ensure the licensing of the servers.
This applies in particular to the Microsoft licenses for Windows Server and the SQL database.
Data security and backup
The customer decides for himself how the backups are carried out.
Confidentiality
The data structure and system parameters that are accessible to the customer are subject to confidentiality.
Change on-premise operation / cloud operation
It is possible to switch between on-premise operation (operation at the customer’s premises) and cloud operation or vice versa at any time.
The following components must be migrated:
- ems database
- ems file storage