Server 2008 low disk space

Solution of Windows Server 2008 Low Disk Space

When system C drive is running out of space, Windows Server 2008 pops up “Low Disk Space” warning. This is the most common disk space usage problem on Windows Server 2008 and it is a headache for many people, so in this article I want to share some experience how to remove low disk space alert and fix this problem completely.

Low disk space

Why Low Disk Space alert

If system C drive is running out of space, or even no free space in C drive, it causes many problem such as: no space to install Windows Updates or applications, server runs much slower, stuck or even crash. It may cause system damage, so you should pay attention. To alert people to fix this issue as fast as possible, Microsoft created such Low Disk Space on Windows Server 2008 (R2).

How Low Disk Space works?

From Microsoft’s explanation, users will receive Low Disk Space Warning in following situations:

  1. When free space reaches 200MB
    Users receive the warning message for 10 seconds, once per session. In this situation, system automatically takes actions to maintain minimum performance capabilities.
  2. When free space reaches 80MB
    Users receive the warning message for 30 seconds, every four hours, twice per session. In this situation, Windows starts to free up drive space by deleting previous System Restore points.
  3. When free space reaches 50MB
    Users receive the alert message for 30 seconds, every five minutes, until the free space is above 50 MB. In this situation, Windows will purge the all System Restore points, and suspend the System Restore function. System Restore will not be reactivated until 200MB free space available in the system partition.

How to fix low disk space on Windows Server 2008

There are two choices: free up disk space and increase C drive free space.

Freeing up space is very useful to the server that never did this. It helps reclaim disk space by deleting unused files, so there will be more free space in C drive. Then you can disable the low disk space warning.

To remove low disk space alert, simply click the icon where it pops up, if the alert disappear and you cannot click it, don’t worry, follow the steps

Step 1: Open “My Computer“, right click the partition that is running low and select “Properties“.

Step 2: In default “General” tab, click “Disk Cleanup” to free up disk space.

It costs several minutes to scan, just wait.

Step 3: In next window, select the files you want to delete. You may click “View Files” to check in pop-up folders.

Step 4: When it finish, click Clean up system files in the same window.

Step 5: To get more free space, you may switch to the More Options tab, where you can uninstall unused programs and delete System Restore and Shadow Copy files.

After these steps, you’ll get some free disk space and Windows Server 2008 “Low Disk Space” warning will be disabled. However, it doesn’t mean you’ve solved this problem completely.

Why this is a headache for many people is because it costs long time to free up space but the low disk space alert pops up again in a short time. Windows Update and many other kinds of services keep writing files into C drive continuously. If you cannot reclaim plenty of free space, or C drive was created too small, you’d better expand C drive with partition software. That is to say, transfer free space from other volumes into C drive, so there will be plenty of free space. Then how to do this?

Transfer free space into C drive

Watch the video how to add existing Unallocated or free space from other volumes into C drive.

In Summary

When Low Disk Space alert pops up in Windows Server 2008 (R2), try to free up space to get some precious free space, to keep the server running in the right way. If you cannot free up plenty of free space, or C drive was created too small, extend C drive by taking free space from other volumes.

To resize partition and extend C drive, I recommend NIUBI Partition Editor, because it the only program than can ensure 100% data safety. The built-in Roll-Back protection technology is able to roll back the server to the status before resizing in a flash, if any software or hardware issue occurred during resizing, so Operating System and data always keep intact. Besides, its unique file-moving algorithm helps resizing partition much faster than other tools. Save much time especially when there are large amount of files in the partition you want to resize. Download to try.