QuestionQ20

Architecture and Technologies

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

  • 5 x vSAN ReadyNodes
  • All Flash – 12 TB raw storage
  • vSAN 8 deployed with ESA
  • New VMs configured with a RAID-5 VM policy

Which statement is accurate?

  • A vSAN will use a 2+1 RAID-5 data placement scheme with parity will be used
  • B RAID 5 will provide an FTT=2 level of protection in this case
  • C vSAN will use a 4+1 RAID-5 data placement scheme with parity will be used
  • D vSAN will spread the components across all of the disk groups
Explanation

vSAN 8 Express Storage Architecture uses adaptive RAID-5 placement: clusters with 3 to 5 hosts use a 2+1 RAID-5 data-and-parity scheme. A five-host cluster therefore uses 2+1 RAID-5. RAID-5 provides FTT=1, while 4+1 RAID-5 requires at least six hosts; ESA also eliminates disk groups.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!