Which of the following techniques for ensuring cloud datacenter storage resiliency uses encrypted chunks of data?

The technique that utilizes encrypted chunks of data to ensure storage resiliency in a cloud datacenter is data dispersion. This method involves breaking data into smaller pieces or chunks, which can be distributed across multiple physical storage locations or datacenters. Each of these chunks is typically encrypted before being stored to enhance security, ensuring that even if one or several chunks are exposed, unauthorized access to the entire dataset is prevented.

Data dispersion offers advantages such as improved fault tolerance and enhanced security. In the event of a datacenter failure, the data can be reconstructed from the remaining chunks stored elsewhere. This technique effectively minimizes the risk of data loss and enhances overall data availability, making it a preferred approach for maintaining resiliency in cloud environments.

In contrast, RAID (Redundant Array of Independent Disks) primarily focuses on redundancy and performance through the combination of multiple disk drives but does not inherently involve the encryption of data chunks. A SAN (Storage Area Network) is a network that connects storage devices, providing access to data but not specifically focusing on the encryption or dispersion aspects. Cloud-bursting refers to the strategy of utilizing cloud resources to handle spikes in demand, rather than a method for ensuring data storage resiliency through encryption.