What RAID configuration should be used to provide redundancy for an OS with two hard drives?

What RAID configuration should be used to provide redundancy for an OS with two hard drives?

• A. RAID 0
• B. RAID 1
• C. RAID 5
• D. RAID 6

Answer: (B)

RAID 1 is the correct choice when seeking to provide redundancy for an operating system with two hard drives. This configuration duplicates the data across both drives, ensuring that if one drive fails, the other still contains an exact copy of the data. This mirroring effect is particularly beneficial for OS reliability, as it allows for quick recovery from a drive failure without data loss or significant downtime. In RAID 1, the total usable storage capacity is equal to the size of one drive, but the redundancy provided is invaluable, especially for systems where uptime and data integrity are critical. This makes RAID 1 a popular choice for operating systems and critical applications that require consistent access to data. The other RAID levels listed, while they have their own benefits, are not suitable for a basic two-drive setup aimed solely at providing redundancy. RAID 0, for example, offers increased performance but no redundancy, making it risky for systems needing reliability. RAID 5 and RAID 6 offer fault tolerance and require a minimum of three and four drives, respectively, thus are not applicable for a setup with only two drives.

RAID 1 is the correct choice when seeking to provide redundancy for an operating system with two hard drives. This configuration duplicates the data across both drives, ensuring that if one drive fails, the other still contains an exact copy of the data. This mirroring effect is particularly beneficial for OS reliability, as it allows for quick recovery from a drive failure without data loss or significant downtime.

In RAID 1, the total usable storage capacity is equal to the size of one drive, but the redundancy provided is invaluable, especially for systems where uptime and data integrity are critical. This makes RAID 1 a popular choice for operating systems and critical applications that require consistent access to data.

The other RAID levels listed, while they have their own benefits, are not suitable for a basic two-drive setup aimed solely at providing redundancy. RAID 0, for example, offers increased performance but no redundancy, making it risky for systems needing reliability. RAID 5 and RAID 6 offer fault tolerance and require a minimum of three and four drives, respectively, thus are not applicable for a setup with only two drives.