What is RAID and what is one benefit and one drawback of RAID 1 mirroring?

What is RAID and what is one benefit and one drawback of RAID 1 mirroring?

• A. RAID stands for Redundant Array of Independent Disks; benefit: data redundancy; drawback: usable capacity is halved.
• B. RAID stands for Random Access Internal Disk; benefit: higher capacity; drawback: data is less secure.
• C. RAID is only for memory.
• D. RAID 1 improves write speed dramatically.

Answer: (A)

Raid stands for Redundant Array of Independent Disks, a way to combine multiple disks to improve reliability and sometimes performance. In RAID 1 mirroring, data is copied exactly to two drives, so you have a duplicate on each disk. The main benefit is data redundancy: if one disk fails, the other still holds all your data, allowing you to keep operating without data loss. A common drawback is that usable capacity is halved, since you’re storing the same information on both disks. (Note that RAID isn’t for memory, and while mirroring can help with readability, it doesn’t typically boost write speed.)

Raid stands for Redundant Array of Independent Disks, a way to combine multiple disks to improve reliability and sometimes performance. In RAID 1 mirroring, data is copied exactly to two drives, so you have a duplicate on each disk. The main benefit is data redundancy: if one disk fails, the other still holds all your data, allowing you to keep operating without data loss. A common drawback is that usable capacity is halved, since you’re storing the same information on both disks. (Note that RAID isn’t for memory, and while mirroring can help with readability, it doesn’t typically boost write speed.)