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An all-flash vSAN cluster contains four nodes.
Which two storage policies can the cluster satisfy? (Choose two.)
A. FTT=2 (RAID-1 Mirroring)
B. FTT=2 (RAID-6 Erasure Coding)
C. FTT=1 (RAID-1 Mirroring)
D. FTT=1 (RAID-5 Erasure Coding)
E. FTT=3 (RAID-1 Mirroring)
Correct Answer: AC
Explanation/Reference:
Reference: https://docs.vmware.com/en/VMware-Cloud-on-AWS/services/com.vmware.vsphere.vmc-aws-manage-data-center.doc/GUID-EDBB551B-51B0-421B-9C44-6ECB66ED660B.html
CD
Thanks Scott.. you are right.. CD are correct. Raid 5 Erasure coding needs minimum 4 nodes for FTT1.
Hi Scott
Thank you for your comment. I would like to take exam. Could you contact with me? [email protected]. I’ll be glad to discuss exams files with you.
CD
For RAID-1, the formula for determining the min number of nodes is 2n + 1, where n is FTT. For FTT=2, RAID-1 requires 5 nodes. So, the best you can do with 4 nodes is FTT=1.
RAID-5 requires 4, and RAID-6 requires 6.