You're installing two new hard drives into your network attached storage device. Your director asks that they be put into a RAID solution that offers redundancy over performance. Which would you use?

To address the question of selecting a RAID solution that prioritizes redundancy over performance for installing two new hard drives, let's follow the structured approach:

Step 1: Define the Problem

The key requirement is to choose a RAID configuration that emphasizes redundancy, ensuring data protection in case of a drive failure.

Step 2: Break Down the Problem

1. Identify RAID levels that offer redundancy.
2. Consider the number of drives available (two in this case).

Step 3: Apply Relevant Concepts

RAID levels that provide redundancy include:

• RAID 1: Mirrors data across two drives, providing redundancy by duplicating the same data on both drives. If one drive fails, the other can continue to operate with no data loss.
• RAID 5: Requires at least three drives, so it's not applicable here.
• RAID 6: Requires at least four drives, so it's not applicable here.

Given that only two drives are available, RAID 1 is the most suitable option for redundancy.

Step 4: Analysis, Verify and Summarize

• RAID 1: Offers full redundancy by mirroring data. It is ideal for scenarios where data protection is more critical than performance, especially with only two drives.

Final Answer

For two new hard drives and a requirement for redundancy over performance, use RAID 1.