An apparatus for configuring a redundancy data center in a cloud computing architecture, wherein the apparatus comprises: a receiving module, configured to receive a request for configuring a redundancy data center, DC, for a specified network service, NS, and transmit the received request for configuring the redundancy DC to an acquiring module; the acquiring module, configured to search, according to the request for configuring a redundancy DC, stored network service chain information for identity information of application objects that support the specified network service, wherein the network service chain information comprises identity information of application objects that support each network service; acquire, from an affinity relationship information base of application objects according to the found identity information, the information about an affinity and/or anti-affinity relationship among application objects that correspond to the identity information.; and transmit the acquired information about the affinity and/or anti-affinity relationship to a selecting module, wherein application objects having an affinity relationship can be deployed in a same DC, and application objects having an anti-affinity relationship can be deployed in different DCs; and the selecting module, configured to select, from deployed DCs, the redundancy DC for the specified network service according to redundancy resource information of the deployed DCs and the information about the affinity and/or anti-affinity relationship acquired by the acquiring module. a receiving module, configured to receive a request for configuring a redundancy data center, DC, for a specified network service, NS, and transmit the received request for configuring the redundancy DC to an acquiring module; the acquiring module, configured to search, according to the request for configuring a redundancy DC, stored network service chain information for identity information of application objects that support the specified network service, wherein the network service chain information comprises identity information of application objects that support each network service; acquire, from an affinity relationship information base of application objects according to the found identity information, the information about an affinity and/or anti-affinity relationship among application objects that correspond to the identity information.; and transmit the acquired information about the affinity and/or anti-affinity relationship to a selecting module, wherein application objects having an affinity relationship can be deployed in a same DC, and application objects having an anti-affinity relationship can be deployed in different DCs; and search, according to the request for configuring a redundancy DC, stored network service chain information for identity information of application objects that support the specified network service, wherein the network service chain information comprises identity information of application objects that support each network service; acquire, from an affinity relationship information base of application objects according to the found identity information, the information about an affinity and/or anti-affinity relationship among application objects that correspond to the identity information.; and transmit the acquired information about the affinity and/or anti-affinity relationship to a selecting module, wherein application objects having an affinity relationship can be deployed in a same DC, and application objects having an anti-affinity relationship can be deployed in different DCs; and the selecting module, configured to select, from deployed DCs, the redundancy DC for the specified network service according to redundancy resource information of the deployed DCs and the information about the affinity and/or anti-affinity relationship acquired by the acquiring module.