As the amount of data in every IT environment is growing every day, data deduplication becomes a vital technology allowing to effectively eliminate redundant data copies and reduce storage overhead. In-line or offline deduplication may deliver different results depending on the environment where it is implemented. To help users evaluate the benefits of data deduplication in their particular environment in a fast and simple manner, StarWind offers its Free Deduplication Analyzer tool. StarWind Deduplication Analyzer estimates how the amount of disk space consumed will be reduced after data deduplication without the need of moving terabytes of data or ordering test hardware, making the sizing process as simple as possible. The Analyzer allows the user to find out compression ratios for particular VMs, determining the best candidates for data deduplication.