For a RAID DP aggregate created with 44 disks and a RAID group size of 15, how many parity disks are there?

To determine the number of parity disks in a RAID DP (Double Parity) aggregate, it's important to understand how RAID DP is structured. RAID DP is designed to provide redundancy and is a specific implementation of RAID 6. In this setup, double parity means that the system can tolerate the failure of two disks within the same RAID group.

In this case, with a total of 44 disks and a specified RAID group size of 15, the formula for calculating the number of parity disks is as follows:

1. For a RAID DP configuration, each RAID group consists of a defined number of data disks. In this instance, we know the total number of disks available and the size of a RAID group.

2. The number of usable disks in a RAID group is given by subtracting the two parity disks from the total number of disks in the group. Therefore, for a RAID group of size 15, there would be 15 - 2 = 13 usable data disks.

To find out how many parity disks are present in the entire aggregate, we can divide the total number of disks by the size of the RAID group. With 44 disks total:

• The number of complete RAID groups = 44 / 15 =