問題文
An administrator destroys and eradicates one of five snapshots that a volume has accumulated but the reclaimed capacity is far smaller than the size reported for that snapshot. What explains the result?
選択肢
- Most of the blocks were shared with the volume as well as its other snapshots so only the blocks unique to that one snapshot are freed.
- The reported size of a snapshot is the size of the source volume so it never matches the amount that eradication can actually free.
- Data reduction had already compressed the snapshot so the array reports the logical size while it can free only the compressed size.
- Eradication only removes the metadata of a snapshot and the underlying blocks stay in place until the volume itself is eradicated too.