free up disk space on Synology NAS
free up disk space on Synology NAS

Low performance got you down? Discover how to free up disk space on Synology NAS to get your system running like new. 




Knowing how to manage the disk space on your Synology Disk Station is a key factor in making sure your file syncing and management is flowing smoothly.

While Synology tries to do its due diligence in protecting your files by keeping various versions of them in case you need to restore them in the future, but unfortunately this can lead to a lack of disk space that will impact your data storage, general performance, and performance speed. So, how do you speed up Synology NAS?

In this article, we’ll cover the steps you can take to free up disk space on Synology NAS to keep everything running at full speed. 


Why Does It Matter How Much Disk Space I Have? 

When we talk about disk space, we’re talking about the physical that is used to store your data. This includes your entire operating system, files, backup versions, and applications.  

If you can imagine your drive as a file cabinet, you’ll understand why it’s important to have enough room and effective organization to be able to retrieve and save data efficiently – when you try to stuff too many papers in a file cabinet without proper labels or folders, the whole thing becomes a nightmare to sort through. This slows down data retrieval, organization, and in the worst cases can make it difficult to try and fit another file into it. 

In the case of Synology NAS where there are multiple users involved, the task of managing and making sure you have sufficient disk space becomes even more important. When your disk space is running low, you’ll notice your computer running more slowly, or your software won’t work properly. Some of the symptoms you may see leading up to that are email notifications or that volume reached a 100% disk capacity in Storage Manager. If you’re running a business, ignoring when to free up disk space on Synology NAS can be a costly mistake. 

While the notifications are annoying in and of themselves and easy to put off, it’s important to speed up Synology NAS by fixing the problem as soon as possible so that you don’t run into any major issues later on. With that, here are a few steps you can take to free up disk space on Synology NAS. 


How to Fix Low Disk Space 

In order to free up disk space on Synology NAS, you’ll need to take several steps for the error messages to go away completely. Thankfully, these are not difficult, but it may benefit you to create a routine to check whether you have low disk space or to delete files you don’t need. Follow the instructions below or reach out to our team of experts to get personalized assistance.  


Step 1: Delete Unnecessary Data 

One of the most important departments of your business is also the one most taken for granted when it’s working and most noticeable when it’s not: payroll. Everyone wants to get paid for the time they worked in a timely manner, but this can be difficult when a mistake is made on either the employee or bookkeeping side. 

The first step you’ll want to try in order to free up disk space on Synology NAS is to get rid of any data you don’t want or need. This will create more room for incoming files that need to be stored and kept safe for future use. Here are some specific locations to delete excess data on your Synology: 

File Station 

Warning! Perform deletions at your own risk. One particular location that contains large files that may not be necessary are files and folders under “video”.  Getting rid of big files such as these can really help speed up Synology NAS.

Synology Drive 

  • If you need to clear some additional space:  
  • Check if Synology Drive’s version history is using lots of space. You can check by going to DSM > Main Menu > Drive Admin Console > Settings > General and clicking the “Calculate” button. 
  • If the database is unusually large:  
  • You can clear versions of deleted files. Go to Settings > Clean out all recycle bins. To clear out all versions for a shared folder, you can disable and then re-enable it in the Settings tab. 

Organizing, sharing, and managing your files is important for efficiency and ease of workflows. We’ve written the following articles on Synology files:


Step 2: Reduce the Maximum Versions Held  

You may be wondering about what settings you should use if your data is changing/being added to frequently or only occasionally. If you are frequently altering your files, it is mostly preferable to hold a larger number of versions. This is a basic practice you can follow no matter whether you are relying on the Synology Drive versioning, Synology Snapshots or both. 

Note: For a more complete look at Synology snapshots and versioning, read this article: Synology Snapshot Replication and File Versioning 

One way to speed up Synology NAS is by editing the settings in Hyper Backup > Settings > Rotation and reducing the number of max versions below the current amount (the latest is not counted) – this will automatically start clearing excess versions to free up disk space in Synology NAS. 

Backing up your files is a must for safeguarding against any physical or virtual accidents that may cause the deletion of your data. Check out some of our other articles on backup or send us a message if you have specific questions. 


Step 3: Change or Disable Version Control 

Another way that you can protect yourself against having to deal with low disk space in the future is by changing or disabling version control.  

You can achieve this by navigating under Synology Drive Admin Console, going to Team Folder > Versioning, then reducing the maximum versions. Make sure to click ‘OK’. 

However, if you don’t have any need for keeping versions of your files, you might also want to consider disabling Synology Drive Versioning completely to save yourself the trouble of deleting different versions later on. 


Step 4: Uninstall Synology Drive Server 

In some cases you may find yourself no longer needing the data on your Synology Drive Server, or maybe you’re not using the Synology Drive much at all. In circumstances like these, you may consider uninstalling the Synology Drive server in order to speed up Synology NAS. 


Step 5: Clean Out the Shared Folder

The recycle bin on Synology NAS is enabled by default. Just like on Windows, or Mac PC, this is where deleted files are sent for easy retrieval in case they are accidentally deleted. However, it can become a graveyard for data that just piles up endlessly if left unchecked, making it difficult to speed up Synology NAS. It’s a good practice to check once in a while to free up disk space on Synology NAS and keep performance at its best. 

If you need extra instructions on sharing files, check out this article: How to easily share Synology file links to everyone 

Clearing out the Recycle bin on Synology is easy: 

  • Open Control Panel and switch to the Shared Folders blade 
  • Select the target Shared Folder, and click on the Edit button 
  • On the General tab click on the Empty Recycle Bin button 




Another option if you wish to clear out Recycle Bins for all shared folders in one go: 
Navigate to Control Panel -> Shared Folders Blade -> Click on the Actions button and from the drop-down menu, choose ‘Empty all Recycle Bins’. This should speed up Synology NAS.





Bonus Synology NAS Resources

Have more questions about Synology? Check out our articles below or reach out to our team of specialists today! 


6 Easy Steps to Free Up Disk Space on Synology NAS Summary 

Technology is great when it’s working and a hair-pulling nightmare when it’s not. Having low disk space can lead to frustrating issues like slow speeds, spammy alerts and notifications, and, the worst, not having enough disk space when you need to save that super important file. After you address any low disk space issues, the extra disk space should automatically speed up Synology NAS. You’ll notice improvement in your system’s performance and performance speed, plus you should be free of those pesky notifications.  

While it’s not difficult to free up disk space on Synology NAS, it can require some routine maintenance depending on the solution you choose. Still having issues? Reach out to our team of IT specialists today to see how we can help! 


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