In which scenario would using VDO be least beneficial?

Using VDO (Virtual Data Optimizer) is least beneficial in situations where disk space is plentiful. VDO is primarily designed to reduce the amount of storage consumed by eliminating duplicate data and compressing datasets. When storage resources are abundant, the need to optimize and save space diminishes significantly. In this scenario, the benefits of VDO, such as deduplication and compression, are less relevant since there is no pressing requirement to improve storage efficiency.

In contrast, using VDO can greatly enhance storage management in environments with large amounts of duplicate data, where it can effectively reclaim significant space by reducing redundancy. In scenarios that demand high performance, VDO might introduce overhead due to the processes of deduplication and compression, making it less than ideal. Lastly, in situations where multiple storage devices are being managed, VDO's capabilities in optimizing space across those devices can be fully realized, providing substantial benefits.