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Broadcom-VMware

5V0-22.23 · Question #77

A customer has deployed a new vSAN cluster with the following configuration: - 5 x vSAN ReadyNodes - All Flash - 12 TB Raw Storage vSAN 8 is deployed with ESA. New VMs are configured with a RAID-5…

The correct answer is A. vSAN will use a 2+1 RAID-5 data placement scheme with parity will be used. Starting with vSAN 8.0 ESA (Express Storage Architecture) VMware has introduced an adaptive RAID-5 mechanism. What does this mean? Essentially, vSAN deploys a particular RAID-5 configuration depending on the size of the cluster! There are two options, let's list them out and…

VMware vSAN Platform and Architecture

Question

A customer has deployed a new vSAN cluster with the following configuration:

  • 5 x vSAN ReadyNodes
  • All Flash
  • 12 TB Raw Storage

vSAN 8 is deployed with ESA. New VMs are configured with a RAID-5 VM policy. Which statement is accurate?

Options

  • AvSAN will use a 2+1 RAID-5 data placement scheme with parity will be used
  • BRAID 5 will provide an FTT=2 level of protection in this case
  • CvSAN will use a 4+1 RAID-5 data placement scheme with parity will be used
  • DvSAN will spread the components across all of the disk groups

How the community answered

(51 responses)
  • A
    84% (43)
  • B
    10% (5)
  • C
    2% (1)
  • D
    4% (2)

Explanation

Starting with vSAN 8.0 ESA (Express Storage Architecture) VMware has introduced an adaptive RAID-5 mechanism. What does this mean? Essentially, vSAN deploys a particular RAID-5 configuration depending on the size of the cluster! There are two options, let's list them out and discuss them individually. RAID-5, 2+1, 3-5 hosts RAID-5, 4+1, 6 hosts or more As mentioned in the above list, depending on the cluster size, you will see a particular RAID-5 configuration. Clusters of up to 5 hosts will see a 2+1 configuration when RAID-5 is selected.

Topics

#vSAN ESA#RAID-5 data placement#erasure coding#ESA architecture

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