2V0-620 · Question #80
What must be enabled to ensure that VM Component Protection (VMCP) works in a High Availability cluster?
The correct answer is D. All Paths Down (APD) Timeout. VMCP detects and responds to storage path failures (APD and PDL), and the APD Timeout must be enabled for it to identify an All Paths Down condition and trigger the configured response.
Question
What must be enabled to ensure that VM Component Protection (VMCP) works in a High Availability cluster?
Options
- AVMware Tools Virtual Machine Communication Interface (VMCI)
- BFault Tolerance
- CAtomic Test and Set (ATS)
- DAll Paths Down (APD) Timeout
How the community answered
(30 responses)- A3% (1)
- B7% (2)
- C13% (4)
- D77% (23)
Why each option
VMCP detects and responds to storage path failures (APD and PDL), and the APD Timeout must be enabled for it to identify an All Paths Down condition and trigger the configured response.
VMCI is an inter-VM communication interface used for guest-to-guest or guest-to-host messaging and plays no role in VMCP storage failure detection.
Fault Tolerance provides continuous availability by keeping a shadow VM in lockstep with a primary VM and is an independent HA feature that is not a prerequisite for VMCP.
ATS (Atomic Test and Set) is a VAAI primitive used for efficient SCSI locking on shared datastores and has no relationship to VMCP storage path monitoring.
VM Component Protection relies on the APD Timeout mechanism to distinguish a transient storage outage from a permanent one; without APD Timeout enabled in the cluster, ESXi cannot classify storage loss as an APD event, so VMCP has no trigger and will not initiate VM restart or migration actions.
Concept tested: VM Component Protection APD Timeout dependency
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-F01F7EB8-FF9D-45E2-A093-5F56A788D027.html
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