eG Monitoring
 

Measures reported by VCvSanHostStTest

Virtual SAN is a radically simple, hypervisor-converged storage solution for virtual machines. It delivers high performance, scale-out storage that is optimized for vSphere virtual infrastructure. It is an enterprise-class storage solution for any virtualized application, including business-critical workloads. Its seamless integration with vSphere and the entire VMware stack makes it the ideal storage platform for virtual machines. Virtual SAN 6.0 can be configured as hybrid or all-flash storage. In a hybrid storage architecture, Virtual SAN pools server-attached capacity devices, in this case magnetic devices, and caching devices, typically SSDs, and PCI-e devices to create a distributed shared datastore that abstracts the storage hardware and provides a Software-Defined Storage tier for virtual machines.

If a host that participates in the vSAN service fails or suffers hardware issues, the vSAN itself may be rendered unavailable/unusable, thus impacting the performance of all the VMs that are using that vSAN. It is hence imperative that administrators monitor the health of every host that contributes its storage resources to the vSAN, quickly identify the host that is experiencing errors/failures, and take pre-emptive measures to fix the faults, so that VM performance is not impacted. This is where the vSAN Host Health Status test helps. This test alerts administrators to the unhealthy state of any host that is participating in the vSAN service, and ensures their timely intervention in resolving the issues and restoring normalcy.

Outputs of the test : One set of results for every vSphere/ESX server host that is participating in the vSAN service.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Health_status Indicates whether/not this host is in a healthy state currently.   The values that this measure can report and their corresponding numeric values have been listed in the table below:

Numeric Value Measure Value
1 Healthy
2 Unhealthy

Note:

By default, this measure reports the Measure Values listed in the table above. In the graph of this measure however, the state of the host is represented using the corresponding numeric equivalents only.