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VMware vSphere Essentials by Christian Stankowic, Kunal Kumar

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Failure resilience with VSAN

In this section, we will look at the storage capabilities that can be selected and saved in virtual machine storage policies. These storage capabilities are as follows:

  • Number of failures to tolerate: This property ensures the availability of the objects by enabling the storage objects to tolerate a defined number of concurrent host, network, or disk failures in the cluster. If this property is populated, it specifies that a virtual machine configuration must withstand at least

    NumberOfFailuresToTolerate + 1 replicas, which may also contain few additional witness objects in order to make sure that the data of the object is available for maintaining quorum un split brain cases, irrespective of that presensce of any NumberOfFailuresToTolerate ...

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