NCP-EUC practice question 6 of 15

A persistent desktop that is already configured for inline-compression can take advantage of which other storage space-saving technology?

Full set: 100 questions
Answer options
A: Storage Pools
B: Inline Erasure Coding Correct answer
C: Increased Redundancy Factor
D: Capacity Deduplication
Correct Answer:
B. Inline Erasure Coding
Explanation

Inline Erasure Coding (EC-X) is a data protection and space-saving technology that can be used in conjunction with other features like inline compression. While traditional redundancy factor (RF2/RF3) creates full data copies, EC-X uses parity calculations, which consumes significantly less storage space. For a persistent desktop, which has unique user data, EC-X provides space savings on data protection overhead regardless of the data content, making it a complementary technology to compression.

Why Incorrect

A. Storage Pools are logical groupings of physical disks and are a foundational element of storage configuration, not a space-saving technology itself.
C. Increased Redundancy Factor (e.g., moving from RF2 to RF3) consumes more storage space to provide higher data availability, it does not save space.
D. Capacity Deduplication is most effective on datasets with many duplicate blocks, like linked-clone VDI. It offers minimal benefit for persistent desktops with unique user data.

References

1. Nutanix AOS 6.5 Advanced Administration Guide, "Data Efficiency," Section: Erasure Coding (EC-X). This section details how EC-X provides space savings over replication-based redundancy factors and can be combined with compression and deduplication.

2. Nutanix Tech Note, "NTNX-1010: Data Efficiency," Section 2.2 Erasure Coding: "Erasure coding provides a space-efficient alternative to replication factor for data protection."

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