It’s twice as mediocre

How does RAID 1 provide redundancy?

A) Parity information is distributed across multiple drives

B) Multiple drives contain distributed parity and duplicated data

C) Information is periodically transferred to an offline storage device

D) Data is duplicated across multiple drives

E) RAID 1 does not provide any data redundancy

F) My redundant data isn’t much better than my non-redundant data

The answer: D) Data is duplicated across multiple drives

RAID 1, or data mirroring, duplicates all data so that a “mirror” of the information is always available across multiple physical drives.

Want to know more? Watch “An Overview of RAID”

The throughput and redundancy advantages of RAID are used in numerous computer systems. In this video, you’ll learn about RAID 0, RAID 1, RAID 5, and RAID 1+0.