An administrator is asked to create a Dynamic Disk Pools (DDP) pool from eleven 12 TB disks with the requirement that there is adequate space…

Dynamic Disk Pools (DDP) are designed to improve data protection and simplify management by eliminating the need for dedicated hot spare drives. When a DDP is created, spare capacity is automatically reserved and distributed in small segments across all drives within the pool. If a drive fails, the data is reconstructed into this reserved space on the remaining healthy drives. The administrator's only action is to create the pool; the system's inherent design automatically allocates the necessary reconstruction capacity, satisfying the requirement without further manual intervention.

A. Create the disk pool, and then edit the pool to reserve 12 TB of space

This is incorrect. Spare capacity reservation is an integral part of the DDP creation process, not a separate, post-creation editing task.

B. Create the disk pool, and then add another 12 TB drive to the pool

This is unnecessary. A DDP with eleven drives already has sufficient built-in, automatically reserved capacity to handle at least one drive failure.

D. Create the disk pool, and then create a hot spare on another 12 TB disk

This describes a traditional RAID group configuration. DDPs use distributed spare capacity and do not use or require dedicated hot spare disks.

1. NetApp Technical Report TR-4090: Dynamic Disk Pools on NetApp E-Series.

Section: "Dynamic Disk Pools Overview

" Page 5.

Quote: "DDPs eliminate the need for dedicated hot-spare drives by distributing spare capacity throughout the pool of drives. When a DDP is created

a certain amount of capacity is reserved for reconstruction in the event of a drive failure." This confirms that spare capacity is an automatic

built-in feature of DDP creation.

2. NetApp E-Series SANtricity 11.70 System Manager Online Help.

Section: "Storage & copy services > Dynamic disk pools."

Content: The documentation describes how DDPs work

stating

"Spare capacity is distributed across all of the drives in a disk pool... If a drive fails

data is reconstructed into the spare capacity on the remaining drives in the pool." This highlights the integrated nature of the spare capacity

contrasting with the incorrect options.

3. NetApp E-Series and EF-Series SANtricity System Manager Guide.

Section: "Create volume groups or disk pools."

Content: The guide details the steps for creating a disk pool. It shows that during creation

the system automatically calculates and reserves preservation capacity based on the number of drives. There is no subsequent step to "edit" the pool to add this capacity or to assign a hot spare.