As to backing up Windows Server, the free Windows Server Backup alternative – MiniTool ShadowMaker is competent. It is a piece of Server backup software, that provides an all-in-one backup and recovery solution. It supports Windows Server 2008/2012/2016/2019/2022.

MiniTool ShadowMaker provides data protection services and disaster recovery solutions for PCs, Servers, and Workstations. It is designed to back up the operating system, disks, partitions, files, and folders. Besides the Backup feature, it is a clone tool, allowing you to clone SSD to larger SSD, and move Windows to another drive.

V4.3 (Nov. 14, 2023) Latest Upgrade!
①Set New disk ID as the default ID option for Clone Disk.
②Fixed system backup error "failed to make snapshot the source drivers" when the OS is BitLocker encrypted.
③More bug fixes and improvements.