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An administrator receives the following error message:
Unmanaged I/O workload detected on shared datastore.
Which vSphere feature is the likely source of this error?
A. Network I/O control
B. Storage I/O control
C. Storage DRS
D. HA datastore heartbeats
Correct Answer: B
Explanation/Reference:
Explanation:
B: This alarm is triggered when vCenter Server detects that a workload from a host might be affecting performance resulting in this error message. The Storage I/O Control troubleshooting topics provide solutions to potential problems that you might encounter when using Storage I/O Control with datastores.
Incorrect Answers:
A: This error message pertains to the datastore and not the networking or switches in the network.
C: vSphere Storage DRS, which enables VMware vSphere to dynamically migrate storage resources to meet demand and this error message is thus not generated from this source.
D: When the master host in a vSphere HA cluster cannot communicate with a slave host over the management network, the master host uses datastore heartbeating to determine whether the slave host has failed, is in a network partition, or is network isolated. Thus this is not the source of the error message.
References:
Lowe, S. & Marshall, N., Mastering VMWare vSphere 5.5, Wiley and Sons, Indianapolis, 2014, pp. 6, 603