I'm studying for the CCSP exam and part of the course curriculum discusses data resiliency. At one point, the material has a blurb about RAID and it just seems... incorrect.
In most RAID configurations, all data is stored across the various disks in a method known as striping. This allows data to be recovered in a more efficient manner because if one of the drives fails, the missing data can be filled in by the other drives. in some RAID schemes (there are many, known as RAID 0-10, with different levels of performance, redundancy, and integrity, depending on the owner's needs), parity bits are added to the ra data to aid in recovery after a drive failure.
Emphasis added by me.
My understanding is that striping, in and of itself, does NOTHING for data protection. It simply distributes data across multiple drives. So instead of a single drive having to provide all of the required material, some data might exist on "drive A" and some data might exist on "drive B". This benefits speed... but without some sort of mirroring, striping alone will not help.
Is my understanding correct? If not, can someone please elaborate?