Exam NCP-MCI v6.5 topic 1 question 77 discussion

A - KB-4853 clear states how to reverse from RF3 to RF2 on storage containers. That's the correct one. B- applying compression is not recommended on compressed datasets such as images C- EC-X can't be applied on a 5-node cluster with Rf3 D- Not Applicable if you don't have any VM to delete https://portal.nutanix.com/page/documents/kbs/details?targetId=kA00e000000XeHLCA0

'CONTAINER' is specified, not cluster, answer A is correct in this specific scenario. Evaluate this DIRECT quote copied from Nutanix KB article 000004853, due to its relevance for question 77. "This KB article describes how to change an RF3 container to an RF2 container to reduce the replication factor and reclaim the physical storage space. Note that this KB discusses the method to change the replication factor of the storage container and not the 'cluster' RF, which remains as RF3 (FT=2)."

This question is bad: https://portal.nutanix.com/page/documents/solutions/details?targetId=TN-2032-Data-Efficiency:compression.html "We recommend compression for almost all use cases except the following workloads: Encrypted datasets Compressed datasets (images, audio, and video)"

After checking carefully, yes the relevant correct answer is B. Because of RF3 with erasure coding requires six nodes. < Erasure coding is supported on clusters with a minimum of 4 nodes when using RF2 and a minimum of 6 nodes when using RF3.>

C is correct. Erasure Coding requires a minimum of four nodes not six nodes.

Nutanix KB 000004853

Something is wrong with this question because: A - cannot be because once you enabled RF3 you cannot go back to RF2 C - cannot be because it is saying 5 node rf3 . to enable erasure coding you need 6 nodes as per links below https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v6_8:wc-erasure-coding-overview-wc-c.html https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide-vpc_2023_4:wc-erasure-coding-best-practices-requirements-wc-c.html D - you cannot just delete VMs So we remain with B .. and maybe is referring cu post compression (which again is not clearly stated) But most probably there is something wrong with the question.

C. Enable Erasure Coding at storage container level. Erasure coding is a data protection method that can help optimize storage space utilization by providing redundancy and fault tolerance with less overhead compared to traditional replication. By enabling erasure coding at the storage container level, you can reduce the storage overhead required for redundancy while still ensuring data integrity and availability.