Many thanks for the assistance and support I received from the community.
Issue description: In the production server we had installed the CA service desk.For example:In the server we have three disk drives like C,D,E.CA service desk is installed in 'E' drive space allocated is 200 GB,now the total drive is got full.i had checked the folder which had used more space.Below are details
Folder location: E:\Program Files (x86)\CA\Service Desk Manager\site\attachments\default\servicedesk\files
Folder name: rep_folder_00001
So its creating new folder day by day and size is increasing.
So I need to increase the drive size or need to clean/delete some files.