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Question 111 - NCP-MCI-6.5 discussion

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A customer has a 24-node cluster with all containers configured with RF3. Two different nodes have incurred a simultaneous HDD failure.

What is the result?

A.
The cluster runs in a degraded state until the failed drives are replaced and the data has been restored to three replicas.
Answers
A.
The cluster runs in a degraded state until the failed drives are replaced and the data has been restored to three replicas.
B.
Sixty minutes after the failures a rebuild of the lost data can remaining HDDs begins to restore to three replicas.
Answers
B.
Sixty minutes after the failures a rebuild of the lost data can remaining HDDs begins to restore to three replicas.
C.
The VMs with data on those drives crash, and an HA event occurs, restarting them on a remaining healthy node.
Answers
C.
The VMs with data on those drives crash, and an HA event occurs, restarting them on a remaining healthy node.
D.
The Nutanix cluster recognizes the failures and immediately begins to rebuild lost data to three replicas.
Answers
D.
The Nutanix cluster recognizes the failures and immediately begins to rebuild lost data to three replicas.
Suggested answer: D

Explanation:

This is because Nutanix uses a distributed storage fabric (DSF) that replicates data across multiple nodes and drives to ensure data resiliency. When a drive fails, the cluster detects the failure and initiates a data rebuild process to restore the replication factor (RF) of the affected containers. The data rebuild process does not affect the availability or performance of the VMs, as they can still access their data from other replicas on other nodes or drives. Therefore, there is no need to wait for 60 minutes, use a shared volume group, or trigger an HA event.

asked 23/09/2024
Talal Elemam
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