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Dell VxRail Architecture Overview


VMware vSAN data stores

VMware vSAN is a hyperconverged, software-defined storage platform that is fully integrated with VMware vSphere. VMware vSAN aggregates locally attached disks of hosts that are members of a VMware vSphere cluster to create a distributed shared storage solution.

There are two VMware vSAN architectures supported for VxRail:

  • VMware vSAN Original Storage Architecture (OSA)
  • VMware vSAN Express Storage Architecture (ESA)

Redundancy is designed into the VxRail standard cluster so that the failure of a single component does not incur downtime. If the storage device or a node fails, you can apply storage policies to VMs running on the VMware vSAN data store to enforce availability. Since the VxRail standard cluster is a single instance that is limited to a single data center site, it cannot support availability requirements from a site-level type of failure.

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