A Disaster Recovery System Model in an E-government System*
, Zhen Cai
, Zengxin Li
, Lihua Zhou
Key Laboratory of Computer Network and Information Security of the Ministry of Education,
Xidian University, Xi’an, 710071, China
National Info Security Engineering and Technology Research Center, Beijing, 100093, China
We present a Robust Disaster Recovery System
Model (RDRSM) for highly security-critical systems to
realize continuous service. Through strengthening safe
communication ability, RDRSM guarantees secure and
reliable command on disaster recovery. It uses self-
supervision function to monitor the integrality and
security of system itself. Through GIS, this model
makes disaster recovery system easier to use, manage
and maintain. RDRSM possesses features of security,
robustness and controllability and can be applied to
environments such as e-government and bank. This
model successfully conducted the construction of an
important e-government disaster recovery system,
which verified its feasibility and the significance of its
components, such as disaster recovery planning,
system supervision and robust communication support.
Presently there are some disaster recovery system
. Some of them are based on
application service provider and are not secure
. Some models can’t stand heavy disasters.
And some models do not involve system management
and maintenance. We present a new Robust Disaster
Recovery System Model
, which is enhanced in
security and stability and can hold heavy disasters.
2. Overview of EEDP
For historical reasons, many applications in an e-
government system formed an inhomogeneous system
and lack of interoperability, extensibility and security.
* This work is supported by the 10th Five Year High-Tech Research
and Development Plan of China (2002AA1Z67101).
As a key project of China, a certain E-government
Experimental and Demonstration Project (EEDP)
needs to rebuild this system. In order to be able to
interoperate with new applications securely, legacy
applications will be migrated to new platform. And
applications should be able to be extended easily.
Information system faces too many risks
viruses, hackers, fire, terrorist attacks. Some disasters
possess mass destructibility, and even intentioned
destroy activities after disasters. EEDP should be able
to protect against such disasters. Figure 1 shows
EEDP’s network connections. Junior governments,
superior government and its remote department,
backup center are connected through ATM backbone.
It uses special telephone line, PSTN, wireless