Thanks, with this keyword I found https://devblogs.microsoft.com/oldnewthing/20190618-00/?p=102597 https://devblogs.microsoft.com/oldnewthing/20190618-00/?p=10.

Thanks, with this keyword I found https://devblogs.microsoft.com/oldnewthing/20190618-00/?p=102597 https://devblogs.microsoft.com/oldnewthing/20190618-00/?p=10... In context of ADS the first thing I imagined was storing the compressed and uncompressed file alongside. (which is rather silly, why compress at all) This use case is also kinda strange. Have the compressed content as ADS, the primary contend filled with 0 as sparse and fill it when needed/accessed. :/