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Question 108 - NCS-Core discussion

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A customer has a four-node cluster and is using Volume Groups to provide storage services to a SQL cluster.

In the event of a CVM failure in the cluster, what is the expected IO path of the volume group's iSCSI targets?

A.
vDisk directed at failure CVM are redirected to Data Services IP until CVM is reconnected
Answers
A.
vDisk directed at failure CVM are redirected to Data Services IP until CVM is reconnected
B.
vDisk directed to CVM that failed to disconnect and will not reconnect without manual intervention
Answers
B.
vDisk directed to CVM that failed to disconnect and will not reconnect without manual intervention
C.
vDisk directed to failed CVM are redirected to another CVM and automatically reconnect
Answers
C.
vDisk directed to failed CVM are redirected to another CVM and automatically reconnect
D.
vDisk directed at failed CVM will disconnect and reconnect when the failed CVM comes back online
Answers
D.
vDisk directed at failed CVM will disconnect and reconnect when the failed CVM comes back online
Suggested answer: C

Explanation:

In a Nutanix cluster, when a Controller Virtual Machine (CVM) fails, the iSCSI targets for the volume groups managed by that CVM are not left inoperable. Instead, the volume group's iSCSI targets (vDisks) are automatically redirected to another operational CVM in the cluster. This failover mechanism ensures that there is no interruption in service or data availability. The redirection is seamless and does not require manual intervention, allowing for continuous access to the volume group by the SQL cluster.

Nutanix Bible: Data Protection and High Availability

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asked 23/09/2024
Mariusz Lewandowski
38 questions
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