For RAID-DP aggregates created with clustered Data ONTAP 8.2 or later, what is the default minimum number of disks?

1 disk cannot support any RAID scheme with parity; there would be no room for data and parity together.

2 disks would only accommodate the two parity disks with no data disk, which is not a valid configuration.

RAID-DP (Double Parity) uses two dedicated parity disks - one row parity and one diagonal parity - to protect against dual simultaneous disk failures. With these two parity disks, at least one data disk is required, making the absolute minimum 3 disks total for a valid RAID-DP aggregate.

4 is not the default minimum; 3 is the minimum, though larger group sizes are typical in production.

5 is not the minimum; it exceeds the required minimum of 3.

6 is a common RAID group size in practice but is not the minimum required.

10 is a larger RAID group size used for capacity optimization, not the minimum.