All of the virtual machines running on a hybrid vSAN datastore have this storage policy assigned:
Failures to Tolerate (FTT) rule is set to "2 Failures - RAID-1 (Mirroring)"
The vSAN administrator needs to reduce the amount of vSAN datastore capacity the virtual machines will consume.
Which action should the vSAN administrator take to meet this goal?
To reduce the amount of vSAN datastore capacity the virtual machines consume, the vSAN administrator should modify the FTT rule to '2 Failures - RAID-5 (Erasure Coding)'. RAID-5 (Erasure Coding) is more storage-efficient than RAID-1 (Mirroring) as it provides fault tolerance with less storage overhead. Although erasure coding requires all-flash configurations, it achieves better storage efficiency by distributing parity data across the drives, thus reducing the overall capacity used while still tolerating two failures.
D is correct A is wrong. Erasure coding requires all flash.
D. Change the FTT (Failures to Tolerate) rule to "1 Failure - RAID-1 (Mirroring)" and select "Now" for Reapply to VMs. This change in the storage policy will reduce the level of data redundancy, which in turn reduces the amount of storage capacity consumed. It changes the mirroring from FTT=2 to FTT=1, which means that each piece of data is only mirrored once instead of twice, thus saving storage space.