Which single choice describes a feature that protects LUN overwrites by deleting snapshots when fractional reserve is 0%?

Which single choice describes a feature that protects LUN overwrites by deleting snapshots when fractional reserve is 0%?

• A. LUN reset
• B. SnapAutodelete
• C. Snapshot Reserve
• D. VolumeAutoSize

Answer: (B)

When fractional reserve is 0%, there’s no reserved space set aside specifically to hold snapshots, so the system can run into space pressure as writes occur. SnapAutodelete automatically removes older snapshots to reclaim their space, allowing LUN writes to proceed and protecting overwrites from failing due to lack of available space. This behavior directly addresses the need to maintain write capability under zero fractional reserve by freeing up snapshot space on demand. The other options don’t provide this automatic snapshot deletion mechanism: LUN reset isn’t about preserving space for overwrites, Snapshot Reserve would reserve space rather than delete, and VolumeAutoSize concerns expanding volume capacity rather than managing snapshots to enable writes.

When fractional reserve is 0%, there’s no reserved space set aside specifically to hold snapshots, so the system can run into space pressure as writes occur. SnapAutodelete automatically removes older snapshots to reclaim their space, allowing LUN writes to proceed and protecting overwrites from failing due to lack of available space. This behavior directly addresses the need to maintain write capability under zero fractional reserve by freeing up snapshot space on demand. The other options don’t provide this automatic snapshot deletion mechanism: LUN reset isn’t about preserving space for overwrites, Snapshot Reserve would reserve space rather than delete, and VolumeAutoSize concerns expanding volume capacity rather than managing snapshots to enable writes.