Which NSS feature allows total size of all volumes on a partition to exceed the physical size of the partition itself?

SnapShot creates point-in-time copies of volume data for recovery purposes and has no effect on the relationship between volume size and partition size.

Shredding is a secure data deletion feature that overwrites deleted files and is unrelated to storage allocation.

Migration refers to moving data between storage tiers or servers, not to overcommitting partition capacity.

Encryption protects data at rest with cryptographic algorithms and does not alter how storage space is allocated or measured.

Overbooking is an NSS feature that lets the combined quota of all volumes within a storage pool exceed the actual physical capacity of the partition backing that pool. Space is only consumed as data is actually written, so volumes can be sized optimistically with the expectation that not all allocated space will be used simultaneously.

Compression reduces the physical space consumed by data on disk but does not allow logical volume quotas to exceed raw partition size.