Hello guys I am thinking of getting another 500 GB HDD I already have one so should I connect them in a raid 0 array or just leave them?
my only concern is about the data failure
Is Raid 0 more risky than a single HDD?
Definitely! Look at it this way: When you RAID-0 two drives, the system sees it as being one large disk, however since you have two mechanisms, you have twice the number of components, and therefore twice the possibilities to fail. And if ONE of the hard drives fails, then you will have lost ALL of your data!
I would leave them as two separate drives.