5V0-22.23 · Question #135
A single disk in a vSAN OSA 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…
The correct answer is B. Deduplication and compression are enabled. When deduplication and compression are enabled in a vSAN OSA cluster, all disks within a disk group share a common cache device and deduplication metadata. If a single disk in that group experiences a permanent failure, the integrity of the deduplication database cannot be…
Question
A single disk in a vSAN OSA 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. All other disks, however, have not suffered from a hardware failure. Why would vSAN mark all disks in this manner?
Options
- AThe vSAN disk management service has failed.
- BDeduplication and compression are enabled.
- CThe affected vSAN node is offline.
- DThe key management server is offline.
How the community answered
(28 responses)- A11% (3)
- B64% (18)
- C21% (6)
- D4% (1)
Explanation
When deduplication and compression are enabled in a vSAN OSA cluster, all disks within a disk group share a common cache device and deduplication metadata. If a single disk in that group experiences a permanent failure, the integrity of the deduplication database cannot be maintained. As a result, vSAN marks all disks in the affected disk group as permanently failed to preserve data consistency, even though only one physical disk actually failed.
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