What is the meaning of the term RAID 1+0?

A.
RAID 1+0 means 1 plus 0 equaling to 1, resulting in RAID 1, which is disk mirroring only.

B.
RAID means “redundant array of independent or inexpensive disks” and uses the EMC Centera
as they use inexpensive disks in there. The number 1 means that only one EMC Centera will be
used.

C.
In comparison to RAID 5, which makes use of five disks, RAID 1+0 means that only one disk is
needed.

D.
RAID 1+0 means disk mirroring for more safety and partition striping among several disks for
better I/O performance.