The correct answer is B: Data redundancy and performance. RAID 5, which stands for Redundant Array of Independent Disks, is a storage technology that combines multiple physical disk drives into a single logical unit. Its primary purpose is to provide both data redundancy and improved performance. It achieves redundancy by distributing both data and parity information across all drives in the array. This means that if one disk fails, the data can be reconstructed from the remaining disks and the parity information, preventing data loss. Performance is enhanced because data is striped across multiple disks, allowing for parallel read operations. While it offers good read performance, write performance can be slightly affected due to the overhead of calculating and writing parity data.
- Option A: Speeding up internet connections is incorrect because RAID is a disk storage technology, not related to network connectivity or internet speed. Internet speed is influenced by factors like bandwidth, network infrastructure, and ISP services.
- Option C: Cooling down server rooms is incorrect. Cooling is managed by HVAC systems, fans, and server room design, which are entirely separate from disk array configurations like RAID.
- Option D: Scanning for malware is incorrect. Malware scanning is a security function performed by antivirus software, not a capability of RAID storage systems. RAID focuses on data integrity, availability, and performance.