Based on Management Meeting recommendation to survey current your department data size and Archive data size on File Server. IT defined 2 group tasks.
Group 1 : Please check data from your department / share folder (Please remove un-value file, non business files )
Group 2 : Please define what kind of data to keep based on your law ? And How many years to keep (Current Data Sheet) (This category keep for current data for support business)
Group 3: Please manage your files for Archive Data (If you can grouping and let IT know how many folder sizes for Archive Data) => Archive Data Sheet (This categoroy keep for reference)
Refer attachment, We provide current data worksheet for Group 2 and Archive worksheet for Group 3 and knowledge how to check fold size ?