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Siemens EMC manual – System description CM110911en_03
Building Technologies EMC structure 18.09.2009
3.8 Security
The application and database servers required for EMC are located in a Siemens
data center. The server farm runs in a "demilitarized zone" (DMZ) with professional
firewalls which protect the application both from the Internet and from the Siemens
intranet.
The application and the data are located on separate servers. There is no access
to the database server via the Internet. The database server can be accessed only
via the EMC application, located on the application server. An encrypted connec-
tion (128-bit SSL) is used for communication with the EMC application server. A
user name and password are required for access to the application.
The data is backed up automatically at regular intervals:
Backup intervals
• Daily backup of new and modified data
• Weekly backup of all data
Retention period for backup data
• 4 weeks for all server data
• Data transfer between the PC/browser and the EMC server is protected by 128-
bit SSL. This is the same encryption technology as is used by banks for secure
e-banking.
• 8 Mbps bandwidth to the Internet (the Internet provider is Siemens)
• 155 Mbps backbone
• Encryption of data transferred between the application server and the user
• UPS (uninterruptible power supply) with a guaranteed emergency power supply
of 100 minutes
• 24-hour monitoring of operations (buildings/rooms, hardware/servers, soft-
ware/applications)
• Strictly controlled access rights
• Optimum operating conditions guaranteed
– Air conditioning system
– Fire detection system
– Water and fire protection (F90)
All EMC server and software components are monitored automatically. Special
components are configured and operated as redundant components. In the event
of a failure, the management station provides notification and associated steps are
introduced immediately.
Although the meter readings, documents and other information maintained in EMC
are stored on servers in the Siemens data center, this data remains the property of
the customer.
Data backup
Features of the
server farm
Server monitoring
Data ownership