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[Review]: VMware Virtual SAN (vSAN)

What’s VMware Virtual SAN (vSAN)?

VMware Virtual SAN or vSAN is a software-defined storage or hyper-converged infrastructure and it’s fully integrated with VMware vSphere. vSAN create a software defined storage area from local storage devices or direct attached devices. vSAN supports vSphere features that the features needs shared storage such as HA and DRS. vSAN is also fully integrated with desktop solutions and any virtual machine will be provisioned and protected on vSAN.

vSAN Use Cases

vSAN can be implemented for any virtualization scenario but VMware vSAN is suitable for the scenarios that those scenarios require high performance but has limited budget.

Some scenarios are as follows:

Reduce IT department cost is final goal of using vSAN.

vSAN Requirements

Same as any other software and feature, vSAN has some requirements to work properly.

The below requirements are needed for deploying vSAN:

Hardware Requirements

  1. Storage Components:
    1. Cache: One SAS or SATA solid state disk (SSD) or PCIe flash device.
    2. Virtual machine data storage
      1. For hybrid group configuration, make sure at least one SAS or NL-SAS magnetic disk is available.

      2. For all-flash disk group configuration, make sure at least one SAS or SATA solid state disk (SSD) or PCIe flash device.

    3. Storage controllers: One SAS or SATA host bus adapter (HBA), or a RAID controller that is in passthrough mode or RAID 0 mode.
  2. Memory: The memory requirements for Virtual SAN depend on the number of disk groups and devices that are managed by the ESXihypervisor. Each host must contain a minimum of 32 GB of memory to accommodate for the maximum number of five disk groups and maximum number of seven capacity devices per disk group.

  3. Flash Boot Devices

Cluster Requirements

Networking Requirements


VMware Virtual SAN (vSAN) is not new solution but there is some advanced features and integration with vSphere that the features helping IT department to deploying different scenarios with high performance storage. vSAN reducing cost for most scenarios such as implementing DR site.

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