Employees in video production companies transfer files to a file server. The backup software in the file server transfers the business data to a backup server. Employee file transfer overlaps with a backup period as a project deadline approaches. The file server is required to minimize the file transfer time for employees when complete backups that have deadline time. The proposed method maximizes file writes by controlling file reads to complete backups by the deadline time. It controls file reading because the calculated and measured backup speeds are different. It also increases the backup speed when the backup speed is decreased according to the number of users transferring files at the same time. The evaluation compares the proposed method with employee file transfers during backup. Three users transfer 100 [GB] files to the file server. The backup deadline is 60 min. File transfer time was reduced from 48 min 46 s to 44 min 3 s. The experimental results show that the proposed method reduced the user’s file transfer time by approximately 9.7%.