The same with previous versions, in Windows Server 2019 system partition also runs low on disk space. The entire system disk may be full in a certain time, too. Nobody likes to start from scratch or waste a long time to back up and restore everything. Therefore, you may want to increase disk space of C drive in Windows Server 2019 or expand disk size without losing data. In this article, I'll show you how to do this.
When system C drive is getting full in Windows Server 2019, firstly check if there's free unused space in other volumes on the same disk. If yes, this problem can be solved easily.
However, there's potential system and data damage risk while resizing disk partitions, because the parameters of associated disk, partition and files must be modified absolutely correct. Therefore, you'd better back up first and run safe partition software.
Better than other tools, NIUBI Partition Editor is much safer and faster because of the advanced technologies:
In most cases, there's other data partition(s) on the same disk with plenty of free space. You can shrink this partition with NIUBI Partition Editor, part of free space will be released and changed to be Unallocated. Add this Unallocated space to C drive, then there will be plenty of free space in system partition again. In this way, your Operating System, programs and associated settings, as well as anything else keep the same with before.
How to increase free disk space of system C drive in Windows Server 2019:
If the entire system disk is getting full, no software can add space to C drive from another separated disk. In that case, there are several options, select the corresponding method according to your own disk partition configuration.
The size of a physical disk is fixed, a 500GB disk can't be decreased to 400GB or increased to 600GB. When it's getting full, follow the steps to copy disk to another larger one. When copying disk, additional space can be added to C drive and other partitions.
RAID 1 is built with 2 hard disks with same size, you cannot increase raid 1 array by replacing with larger disks one by one. If you do like that, you'll get another raid 1 with same size. You won't see the remaining space in Disk Management or any partitioning software. The remaining space will be wasted or used to create another separated raid array.
You need to build another raid 1 with larger disks, and then copy from original raid 1 to the new one. If you cannot connect 2 raid 1 to the server at the same, follow the steps:
About hardware RAID 5 and any other types of raid array, when it is full, firstly check if your raid controller can expand raid array by replacing with larger disks without losing data. If yes, follow the instructions in the manual or ask help from your raid card/controller manufacturer.
After replacing disk and rebuilding raid array, additional disk space will be shown as Unallocated on the end. Then follow the steps to move and merge Unallocated space to other partition(s).
When a virtual disk is getting full, it is very easy to solve this problem. You can expand virtual disk size without copying to other device. Follow the steps below:
After expanding virtual disk, additional space will be shown as Unallocated on the end, then follow the steps to add Unallocated space to C drive (and other volumes).
Besides shrinking, extending, copying and moving disk partitions, NIUBI Partition Editor helps do many other disk partition management operations.