In an aggregate using a RAID-DP raid group, what is the minimum number of disks that are needed to create an
aggregate so that it contains three data disks?

A.
9 disks

B.
7 disks

C.
3 disks

D.
5 disks

Explanation:
The minimum number of disks in a RAID-DP group is three: at least one data disk, one regular parity disk, and
one double-parity (or dParity) disk. If there is a data-disk or parity-disk failure in a RAID-DP group, Data ONTAP
replaces the failed disk in the RAID group with a spare disk and uses the parity data to reconstruct the data of
the failed disk on the replacement disk. If there is a double-disk failure, Data ONTAP replaces the failed disks in
the RAID group with two spare disks and uses the double-parity data to reconstruct the data of the failed disks
on the replacement disks.
RAID-DP is the default RAID type for all aggregates.