What RAID configuration is best for maximizing disk performance while allowing for redundancy?

What RAID configuration is best for maximizing disk performance while allowing for redundancy?

• A. RAID 1
• B. RAID 5
• C. RAID 0
• D. RAID 10

Answer: (D)

RAID 10, also known as RAID 1+0, combines the advantages of both RAID 1 and RAID 0. It provides redundancy through mirroring (from RAID 1) and enhances performance through striping (from RAID 0). In this configuration, data is first mirrored across pairs of disks, ensuring that if one disk fails, the data remains safe on the mirrored disk. Additionally, data is striped across multiple disks, which improves read and write performance. This dual benefit makes RAID 10 an excellent choice for environments that require both high performance and data redundancy, such as databases and critical applications where uptime and speed are essential. Other options, such as RAID 1 and RAID 5, do offer redundancy but do not match the performance level that RAID 10 achieves. RAID 0 maximizes performance through striping but lacks any redundancy, making it unsuitable for situations where data protection is necessary. RAID 10, therefore, stands out as the most effective solution for achieving both performance and data integrity.

RAID 10, also known as RAID 1+0, combines the advantages of both RAID 1 and RAID 0. It provides redundancy through mirroring (from RAID 1) and enhances performance through striping (from RAID 0). In this configuration, data is first mirrored across pairs of disks, ensuring that if one disk fails, the data remains safe on the mirrored disk. Additionally, data is striped across multiple disks, which improves read and write performance. This dual benefit makes RAID 10 an excellent choice for environments that require both high performance and data redundancy, such as databases and critical applications where uptime and speed are essential.

Other options, such as RAID 1 and RAID 5, do offer redundancy but do not match the performance level that RAID 10 achieves. RAID 0 maximizes performance through striping but lacks any redundancy, making it unsuitable for situations where data protection is necessary. RAID 10, therefore, stands out as the most effective solution for achieving both performance and data integrity.