You are employed as a network administrator at ABC.com. ABC.com has a single Active Directory
domain named ABC.com. All servers on the ABC.com network have Windows Server 2012
installed.
ABC.com has two servers, named ABC-SR07 and ABC-SR08, which are configured in a two-node
failover cluster.
You are currently configuring the quorum settings for the cluster. You want to make use of a
quorum mode that requires one node to be available and in communication with a specific disk in
the cluster storage.
Which of the following is the mode you should use?
A.
Node Majority
B.
Node and Disk Majority
C.
Node and File Share Majority
D.
No Majority: Disk Only
Explanation:
There are four quorum modes:
Node Majority: Each node that is available and in communication can vote. The cluster functions only with a majority of the votes, that is, more than half.
Node and Disk Majority: Each node plus a designated disk in the cluster storage (the “disk witness”) can vote, whenever they are available and in communication. The cluster functions only with a majority of the votes, that is, more than half.
Node and File Share Majority: Each node plus a designated file share created by the administrator (the “file share witness”) can vote, whenever they are available and in communication. The cluster functions only with a majority of the votes, that is, more than half.
No Majority: Disk Only: The cluster has quorum if one node is available and in communication with a specific disk in the cluster storage.
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Answer D is wrong, this is not recommended and it isn’t a cluster as soon as 1 node goes down. Should be A.
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We have an even (2-node) cluster so we need a witness as a tiebreaker that in this case is required to be a disk (it could be also a file share). So I would say B.
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I do concur on that.
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The answer is D.
In this question, it says : “You want to make use of a quorum mode that requires one node to be available and in communication with a specific disk in the cluster storage”
this is the definition of “No Majority: Disk Only” :
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No Majority: Disk Only
The following illustration shows how a cluster that uses the disk as the only determiner of quorum can run even if only one node is available and in communication with the quorum disk. It also shows how the cluster cannot run if the quorum disk is not available (single point of failure). For this cluster, which has an odd number of nodes, Node Majority is the recommended quorum mode.
https://technet.microsoft.com/fr-fr/library/cc770620%28v=ws.10%29.aspx
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Even if in the real life, I will be agree with Raoul.
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Gaston is right. The definition of “No Majority: Disk Only” on technet is:
No Majority: Disk Only: The cluster has quorum if one node is available and in communication with a specific disk in the cluster storage.
This is worded exactly as in the exam question
https://technet.microsoft.com/en-us/library/cc770620%28v=ws.10%29.aspx
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