Question:- 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?
a. RAID 0 b. RAID 1 c. RAID 5 d. RAID e. RAID 10 Answer: If you are installing two new hard drives into your network-attached storage (NAS) and need a RAID solution prioritizing redundancy over performance, the best choice is RAID 1.Why RAID 1?
RAID 1, also known as mirroring, duplicates data across both drives, ensuring complete redundancy. If one drive fails, the second drive retains all data, minimizing downtime and preventing data loss. This setup is commonly used in small business servers, personal NAS devices, and entry-level data protection solutions.
Why Not Other RAID Levels?
- RAID 0: Uses striping to enhance performance but offers no redundancy—a single drive failure results in total data loss.
- RAID 5 & RAID 10: Require a minimum of three and four drives, respectively, making them unsuitable for a two-drive setup.
- RAID (General Term): RAID is a broad term covering multiple configurations, not a specific solution.
Industry Insight:
According to Synology and Western Digital, RAID 1 is the recommended choice for small-scale NAS setups requiring reliability. However, it comes with a trade-off—usable storage is only 50% of total capacity, as one drive is a mirror of the other.
Final Answer:
✅ b. RAID 1 – Best RAID solution for redundancy when using two hard drives.
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