What type of encryption is referred to when data is obfuscated on a RAID 5 storage array?

When data is obfuscated on a RAID 5 storage array, it refers to the data being encrypted while it is stored - which is known as encryption at rest. This type of encryption protects the data stored on the storage medium when the system is powered off or otherwise inactive, ensuring that unauthorized users cannot access it without the proper keys or credentials.

In the context of a RAID 5 array, which uses striping with parity to provide fault tolerance and improve performance, data is stored across multiple disks. When such data is encrypted at rest, even if an attacker gains access to the physical disks, they are unable to read the data without decrypting it first.

Other types of encryption, such as encryption in transit, would involve protecting data as it travels across a network, while end-to-end encryption secures data from the point of origin to its final destination, regardless of the medium in between. Hybrid encryption combines aspects of different encryption methods but does not specifically refer to how data is stored on a physical medium like a RAID array. Thus, encryption at rest is the most appropriate term to describe the obfuscation of data stored on a RAID 5 configuration.