Hard disk drives are indispensable components of a server, and reliable partitioning software is helpful for managing disk partitions. There is a native free partition manager in Windows Server 2012 and R2, but it is not perfect. Besides the basic operations of creating, deleting, and formatting partitions, server administrators need to shrink, extend, merge, copy, and convert disk partitions, etc. Reliable server partition software can help you accomplish these tasks easily and safely. This article introduces the best disk partition software for Windows Server 2012 R2.
What's Inside the Server Partition Software
Resize Disk Partitions
Shrink, extend, move, and merge partitions to optimize space usage without losing data.
Partition Management
Create, Delete, Format, Explore partitions, Change partition labels and drive letters, Set Active partitions, etc.
Convert Disk Partitions
Convert MBR disks to GPT, Convert partitions between Logical and Primary, Convert NTFS partitions to FAT32.
Clone & Migration
Migrate the OS to a new disk, and clone entire disks or single partitions to back up or migrate data.
System Optimization
Defragment partitions, Fix file system errors, Scan for bad sectors, Initialize disks, view disk/partition properties, etc.
Data Security
Hide partitions, Set disk read-only attributes, erase data on disks/partitions/Unallocated space.
Download this partition software in a Windows 2012 server, and you will see the main window with 5 sections.
- All single partitions with detailed parameters.
- All physical and virtual disks (RAID arrays) with graphical structures.
- Available operations for a selected disk or partition. (You will see the same options by right-clicking.)
- Pending Operations: all operations you perform will not be executed immediately; instead, they will be listed there as pending.
- Cancel, redo, or apply the pending operations.
Unlike other disk partition tools that list all options, NIUBI only lists the available operations to keep the interface clean; unavailable options are hidden automatically.
The Safest Disk Partition Software for Windows Server 2012 R2
Data is the most important aspect of a server, but there is a potential risk of data loss when resizing partitions or making other modifications, as the parameters of all associated disks, volumes, and files must be modified correctly. Any incorrect parameter could cause system boot failure, partition corruption, or data loss. Besides software errors, hardware issues such as power failures can also cause damage. Therefore, it's better to use reliable and safe partitioning software for your server.
Some server administrators do not pay enough attention and only realize the danger when damage occurs. Most server administrators will back up the server before any operations, but that is not enough. For example, when the system or a drive is damaged, it can take several hours or even a whole day to restore, verify data integrity, and complete other operations. It is undoubtedly a disaster if a server is offline for such a long time. Additionally, if the backup is not real-time, some data will be lost.
Better than other partition software for Server 2012, NIUBI Partition Editor has advanced technologies to protect your system and data:
- Virtual Mode - All operations will be listed as pending for preview; real disk partitions will not be modified until you click Apply to confirm.
- Cancel-at-Will - If you applied the wrong operations, it does not matter; you can cancel the ongoing operations without damaging the server.
- 1-Second Rollback - If any error is detected while resizing partitions, it automatically reverts the server to its original status in a flash. If this happens, your server could be back online without modification in a short time. Therefore, you do not have to restore everything from a backup.
Because it does not require rebooting the server to clone a disk partition, you may run NIUBI Partition Editor to clone the system disk regularly. Whenever your system disk goes down for any reason, you just need a restart and select the cloned disk to boot directly. This is super fast.
The Fastest Partition Manager for Windows Server 2012 R2
It is also important to keep the server running online, but when copying a disk, shrinking a partition rightward, or moving a partition, a server reboot is required to proceed. The more files there are in the partition or disk, the longer it takes to finish. A good algorithm is very important and helpful for saving time.
Thanks to its unique file-moving algorithm, NIUBI Partition Editor is 30% to 300% faster than other disk partition software for Windows Server 2012. Under certain conditions, such as very low RAM, very high CPU usage, or a large number of files, it can be up to 5 times faster. This has been strictly tested. If possible, you may compare it with other tools under the same conditions using a timer.
Other Benefits of NIUBI Partition Editor for Windows 2012 Server
Extend NTFS Partitions Online
The built-in Hot-Resize technology can extend an NTFS partition in Windows without rebooting. Nowadays, most partitions on a local hard disk are formatted as NTFS, so close other running applications and open files/folders in a partition, and NIUBI can extend this partition on the fly.
The pending operations marked with a 
can be done in Windows, and the others marked with 
require a server reboot.
Multiple Storage Types Supported
NIUBI Partition Editor is compatible with Windows Server 2025, 2022, 2019, 2016, 2012, 2008, 2003, and Small Business Server/Home Server. This server partition manager supports all types of local and removable hard disks, all types of hardware RAID, VMware/Hyper-V virtual machines, USB flash drives, and memory cards.
How to Manage Disk Partitions in Windows Server 2012 R2
- How to resize Server 2012 partition volume
- How to shrink partition in Windows 2012 server
- How to extend C: drive by shrinking other volume
- How to copy and migrate entire disk
- How to copy and move single partition
- How to move and add Unallocated space into C drive
- How to extend system reserved partition
- How to expand and increase D: drive space
- How to fix Extend Volume grayed out issue
- How to move and merge Unallocated space
Because of its data protection and fast resizing abilities, ease of use with a neat interface, as well as plenty of disk/partition management features, NIUBI Partition Editor is recommended as the best partition software for Windows Server 2012/2016/2019/2022/2025 and previous Server 2008/2003.
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