A single disk in a vSAN disk group suffers from an unrecoverable hardware failure. This causes vSAN to set the health status for all disks in the group to
Permanent disk loss, indicating disk failure.
Assuming all other disks have not suffered from a hardware failure, why would vSAN mark all disks in the group as failed?
If deduplication and compression are enabled on a vSAN cluster, an unrecoverable hardware failure in any single disk of a disk group causes the entire disk group to be marked as failed. This is because deduplication and compression introduce dependencies across all disks within the group, and failure of one disk disrupts the integrity of the entire deduplication and compression process.
D is the right answer https://kb.vmware.com/s/article/2149067
Agree D is correct - Information from vSAN Deploy and Manage eBook: If an unhealthy disk belongs to a deduplication-enabled diskgroup, the whole diskgroup is marked as unhealthy.
D is right, when you have dedup enabled and any disk failed, the entire diskgroup will go down
D is the correct answer. Unhealthy disks or diskgroups are marked as such, and at this point, the disks or diskgroups are no longer used for new data placement. If an unhealthy disk belongs to a deduplication-enabled diskgroup, the whole diskgroup is marked as unhealthy. Taken from vSAN 6.7 Deploy and Manage Lecture Manual - Unhealthy Devices and Data Evacuation section
D is correct, it's one of the cavehats of dedup & compression, only on disk can fail wht whole diskgroup
D is right
When deduplication and compression is enabled, if a capacity disk fails, the entire disk group becomes unavailable.
D is correct
VMware Documentation