Which three techniques are used in ONTAP to improve storage efficiencies? (Choose three.)

NetApp ONTAP employs a suite of storage efficiency technologies to reduce the storage footprint.

Compression: Reduces the space required for data by using algorithms to remove redundant data within blocks. ONTAP offers both inline and post-process compression.

Compaction: A space-saving feature that combines multiple data blocks that are not full into a single 4KB physical block on the disk, which is particularly effective for files with small I/O operations.

Thin Provisioning: Allows volumes and LUNs to be provisioned with more logical space than is physically allocated. Physical storage is consumed only as data is written, improving storage utilization and deferring storage purchases.

B. encryption: This is a security feature that protects data at rest from unauthorized access. It does not reduce the amount of storage space consumed.

D. ADP: Advanced Drive Partitioning is a technology for partitioning physical drives into smaller logical units, primarily used to create root-data partitions, improving drive utilization in smaller systems, not for data reduction.

1. NetApp ONTAP 9 Documentation

"Logical storage management overview": This document outlines the core storage efficiency features. It states

"ONTAP provides a variety of storage efficiency features

including thin provisioning

deduplication

compression

and compaction

that enable you to store more data in less space." This directly supports options A

C

and E.

2. NetApp Technical Report TR-4343

"ONTAP 9 Storage Efficiency":

Section 2.3

"Compression": "ONTAP compression reduces the physical capacity required to store data on storage systems by compressing data blocks." (Supports A)

Section 2.4

"Compaction": "Compaction is a storage efficiency feature that is new in ONTAP 9. It combines multiple blocks from the same volume that are not full into a single 4KB block." (Supports C)

Section 2.1

"Thin Provisioning": "Thin provisioning enables on-demand allocation of storage. A thin-provisioned volume or LUN is one for which storage is not reserved in advance but is allocated dynamically from a pool of free space as it is needed." (Supports E)

3. NetApp ONTAP 9 Documentation

"Overview of Advanced Drive Partitioning": This document clarifies the purpose of ADP. It states

"Advanced Drive Partitioning (ADP) is a means of partitioning a drive into multiple storage partitions... to separate user data from ONTAP system and metadata." This confirms ADP is for drive allocation and system configuration

not data reduction efficiency.