Ensuring Data Security on SAN

Which of the following must a server administrator do to ensure data on the SAN is not compromised if it is leaked?

A.

Encrypt the data that is leaving the SAN

B.

Encrypt the data at rest

C.

Encrypt the host servers

D.

Encrypt all the network traffic.

B.

The correct answer is B, encrypt the data at rest.

A Storage Area Network (SAN) is a specialized high-speed network that provides block-level access to data storage, typically used in enterprise environments to support critical applications and services. SANs are designed to provide high performance, availability, and scalability for storage systems.

Data security is a critical concern for SANs, and there are various measures that server administrators can take to ensure that data is not compromised in case of a leak. Encrypting data at rest is one of the most effective ways to protect data on the SAN.

Encrypting data at rest means encrypting data while it is stored on the storage devices, such as disk arrays or tape libraries, that make up the SAN. This ensures that even if the data is compromised and falls into the wrong hands, it will be unreadable without the encryption key.

Other options listed in the question, such as encrypting data leaving the SAN, encrypting host servers, or encrypting all network traffic, may also provide some level of protection, but they are not as effective as encrypting data at rest.

Encrypting data leaving the SAN would only protect the data while it is in transit, but would not protect it if it is stored or intercepted. Encrypting host servers or encrypting all network traffic would provide some protection, but they would not protect data stored on the SAN.

In conclusion, encrypting data at rest is the best way to ensure that data on the SAN is not compromised if it is leaked, and server administrators should implement this measure as part of their overall SAN security strategy.