What is the primary capacity overhead of erasure coding compared to replication in a vSAN cluster?

Erasure coding and replication have identical capacity overhead.

Erasure coding uses more capacity than replication because it stores multiple full copies.

Erasure coding uses less capacity than replication for the same level of fault tolerance.

Erasure coding has no capacity overhead because it uses compression.

A VxRail designer is comparing replication (FTT=1) and erasure coding (RAID 5, 4+1) for a cluster. What is a key trade-off between these two methods?

Erasure coding provides higher fault tolerance than replication in all cases.

Replication is always faster than erasure coding for read operations.

Erasure coding requires more nodes than replication for the same fault tolerance.

Replication uses more storage capacity but requires less CPU overhead than erasure coding.

A VxRail cluster is being designed with 6 nodes. The customer wants to use vSAN erasure coding with a 4+2 configuration. What is the minimum number of nodes required, and what is the fault tolerance?

5 nodes, tolerates 1 node failure

6 nodes, tolerates 1 node failure

8 nodes, tolerates 2 node failures

6 nodes, tolerates 2 node failures

Dell VxRail Design

Domain 3Objective 3

Identify the Impact of Fault Tolerance Methods. VXRAIL-DESIGN Practice Questions (Page 5)

Part of the Determine the Nodes and Node Resources domain, which accounts for 30% of the VXRAIL-DESIGN exam.

28questions here

6free pages

7concepts

30%of the exam

Questions 21–25

21foundation · easy
What is the primary capacity overhead of erasure coding compared to replication in a vSAN cluster?
Select an answer first
22foundation · easy
A VxRail designer is comparing replication (FTT=1) and erasure coding (RAID 5, 4+1) for a cluster. What is a key trade-off between these two methods?
Select an answer first
23application · medium
A VxRail cluster is configured with vSAN replication factor 2 (RF2). The customer wants to ensure that data remains available if one node fails. What is the minimum number of nodes required in the cluster?
Select an answer first
24expert · medium
A VxRail cluster is being designed with 6 nodes. The customer wants to use vSAN erasure coding with a 4+2 configuration. What is the minimum number of nodes required, and what is the fault tolerance?
Select an answer first
25application · medium
A VxRail cluster is configured with vSAN replication factor 2 (RF2). The customer wants to know the storage overhead percentage. What is the correct overhead?
Select an answer first

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Identify the Impact of Fault Tolerance Methods. VXRAIL-DESIGN Practice Questions (Page 5)

Questions 21–25

What is the primary capacity overhead of erasure coding compared to replication in a vSAN cluster?

A VxRail designer is comparing replication (FTT=1) and erasure coding (RAID 5, 4+1) for a cluster. What is a key trade-off between these two methods?

A VxRail cluster is configured with vSAN replication factor 2 (RF2). The customer wants to ensure that data remains available if one node fails. What is the minimum number of nodes required in the cluster?

A VxRail cluster is being designed with 6 nodes. The customer wants to use vSAN erasure coding with a 4+2 configuration. What is the minimum number of nodes required, and what is the fault tolerance?

A VxRail cluster is configured with vSAN replication factor 2 (RF2). The customer wants to know the storage overhead percentage. What is the correct overhead?

Keep studying — Determine the Nodes and Node Resources