Data masking techniques include substitution, shuffling, and masking with random values to obfuscate sensitive information while maintaining data usability for authorized users. Encryption is a separate data protection method.

Proper documentation of installation and configuration steps in Commvault helps in "Knowledge sharing" and "Disaster recovery planning." It enables efficient troubleshooting, ensures compliance, and facilitates knowledge transfer within the organization.

Role-based access control (RBAC) is a method of restricting network access based on the roles of individual users. It enables organizations to assign permissions and privileges to users based on their role within the organization, ensuring that users only have access to the resources necessary for their job functions. RBAC helps enhance security by reducing the risk of unauthorized access and ensuring that sensitive data is only accessible to authorized personnel. Understanding RBAC is crucial for implementing effective access control measures in an organization's IT environment.

In case of a security breach in Commvault, immediate notification to the security team with detailed logs is crucial for prompt action. Enhanced security measures and access controls should also be implemented to prevent future breaches.

Network bandwidth optimization in Commvault focuses on minimizing consumption by employing techniques like data deduplication, compression, and bandwidth throttling, thus enhancing performance.

In this scenario, the most relevant aspect of Role-Based Access Control (RBAC) would be Least Privilege. This principle ensures that users are granted only the minimum level of access necessary to perform their job functions, thus minimizing the risk of unauthorized access and data breaches.

The choice of secure data transfer protocol in Commvault is primarily determined by the type of data being transferred. For example, sensitive or confidential data may require stronger encryption protocols like AES-256, while less sensitive data may use standard SSL/TLS protocols. Compliance requirements also play a significant role, as certain regulations mandate specific encryption standards for data transfer.

Commvault prioritizes alerts and notifications based on severity levels such as Critical, Warning, and Informational. This ensures that critical issues affecting data availability are addressed first, followed by warnings and informational notifications. Prioritizing alerts by severity helps organizations allocate resources efficiently and minimize downtime.

In a large-scale Commvault environment, managing alerts and notifications requires a multi-faceted approach. Email alerts are useful for real-time notifications that can be accessed from anywhere. Dashboard notifications provide a centralized view of ongoing alerts and trends. SNMP traps allow integration with network management systems for automated responses. Mobile app notifications ensure that administrators can stay updated even when away from their desks.

Commvault leverages caching mechanisms by storing frequently accessed data in memory, enabling faster retrieval during data operations. Caching reduces the need to fetch data from slower storage devices, thereby enhancing overall performance and responsiveness.

Strategies for continuous monitoring and updating of Endpoint Protection solutions include implementing automated patch management to quickly deploy security updates, conducting regular security audits to identify vulnerabilities, providing user training to enhance security awareness, and establishing an incident response plan for effective handling of security incidents.

The correct option is Enterprise. Organizations typically choose Commvault's Enterprise edition for basic backup and recovery needs due to its robust feature set and scalability.