CompTIA Server+ (SK0-005) — Question 245

An engineer is configuring the RAID on a new server that will support a large database handling real-time data processing. The system needs to have the largest available space with the best write performance. Given the following disks and configurations:

• Four 300GB SSD disks
• Eight 1.2TB 15K SAS disks
• Must include redundant OS disk

Which of the following configurations would meet all the necessary requirements for the new database server?

Answer options

• A. OS-Two SSD RAID 1 - DB logs - Two SSD RAID 1 - Data - Six 1.2TB 15K SAS RAID 5 - TWO hot-spare disks 1.2TB 15K SAS
• B. OS - One SSD RAID 0 - DB logs - One SSD RAID 0 - Data - Eight 1.2TB 15K SAS RAID 6 Two hot-spare disks SSD Disks
• C. OS - Two SSD RAID 1 - DB logs - Two SSD RAID 1 - Data - Eight 1.2TB 15K SAS RAID 5 No hot-spare disks
• D. OS - Two SSD RAID 0 - DB Logs - Two SSD RAID 1 - Data - Eight 1.2TB 15K SAS RAID 5 No hot-spare disks

Correct answer: C

Explanation

The correct answer is C because it utilizes RAID 1 for the OS and DB logs, ensuring redundancy, while RAID 5 for the data provides good write performance and efficient use of storage space. Option A does not meet space requirements due to the reduced number of SAS disks used, B uses RAID 6 which is less optimal for write performance than RAID 5 in this scenario, and D compromises the OS redundancy by employing RAID 0, which is not acceptable.