MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -RAID 0 offers the best performance and capacity but no fault tolerance. Conversely, RAID 1 offers fault tolerance but does not offer any capacity of performance benefits. While performance is an important factor, backup admins may prioritize fault tolerance to better protect data.

Detailed explanation-2: -RAID 10 is a combination of RAID 1 and 0 and is often denoted as RAID 1+0. It combines the mirroring of RAID 1 with the striping of RAID 0. It’s the RAID level that gives the best performance, but it is also costly, requiring twice as many disks as other RAID levels, for a minimum of four.

Detailed explanation-3: -Raid 5 has good failure resistance and better security. The performance is great in Raid 1, but in Raid 5, performance is slow due to disks’ redundancy. Data cannot be accessed from a failed drive in Raid 1, whereas data can be accessed from a failed drive in Raid 5.

Detailed explanation-4: -Disk mirroring, also known as RAID 1, is the replication of data to two or more disks. Disk mirroring is a good choice for applications that require high performance and high availability, such as transactional applications, email and operating systems.