Question from Bill:  I recently read an article about using hard drives or SSDs in a RAID configuration.

The article said RAID 1 copies all data to every drive in the array at the same time, essentially creating a clone of the primary drive in real time.

In the comments on the article someone suggested that using two drives in RAID 1 will automatically create a backup, eliminating the need to back up the hard drive in the usual way.

That made sense to me but then someone else commented and said that’s a really bad idea. But he didn’t explain why.

What’s your opinion on using RAID 1 to create automatic backups? Is it a good idea or not?

Rick’s answer:  [Read more…]