PS-02—Redundancy model
>Control Description
The cloud service is provided from two locations that are redundant to each other. The locations meet the security requirements of the Cloud Service Provider (cf. PS-01 Security Concept) and are located in an adequate distance to each other to achieve operational redundancy. Operational redundancy is designed in a way that ensures that the availability requirements specified in the service level agreement are met. The functionality of the redundancy is checked at least annually by suitable tests and exercises (cf. BCM-04 - Verification, updating and testing of business continuity).
Additional criteria: The cloud service is provided from more than two locations that provide each other with redundancy. The locations are sufficiently far apart to achieve georedundancy. If two locations fail at the same time, at least one third location is still available to prevent a total service failure. The georedundancy is designed in a way that ensures that the availability requirements specified in the service level agreement are met.. The functionality of the redundancy is checked at least annually by suitable tests and exercises (cf. BCM-04 - Verification, updating and testing of business continuity).
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