Backing Up company files

Welcome to the Community, Dundeeboy59. I'd be more than happy to share some information about company files.
 

There's no limitations for a file's size. They can be as large as necessary. If you're encountering performance issues that you feel are related to its size, I'd recommend troubleshooting with some of your available tools.
 

Initially, you can use the Verify Data utility. It identifies known issues within company files and informs users if their Rebuild Data option needs to be utilized afterwards.
 

Here's how it's used:

1. Click Window, then Close All.
2. In your top menu bar, go to File.
3. Choose Utilities.
4. Select Verify Data.

In the event its results show a "Your data has lost integrity," message, this indicates there's damage in your file. You can use the Rebuild Data utility to fix it. For specific errors, there may already be a resource for them on our support site.
 

If it displays a "QuickBooks detected no problems with your data," notification, or you've searched our help articles and didn't find any existing resources about the specific error it displayed, you can move on to troubleshooting with our QuickBooks Tool Hub.
 

Here's how:

1. Close QuickBooks and download a copy of the utility's most recent version, then run it.
2. Follow along with your on-screen steps to complete installation and agree with our terms and conditions.
3. Once it's installed, double-click its icon to open the tool hub. If you can't find your app, perform a search in Windows for "QuickBooks Tool Hub" and select the program.
4. Access your Company File Issues tab and use the Quick Fix my file and QuickBooks File Doctor tools to troubleshoot your company file. In the event you need additional assistance, choose File Dr Help.

If you're continuing to experience problems with performance, you can consider using your Condense Data utility. This isn't reversible and should only be used as a last option for troubleshooting. It's recommended that you consult with your accounting professional and technical support before utilizing the tool.
 

Please feel welcome to send a reply if there's any questions. Have a wonderful day!

@Dundeeboy59 

You may have a QBB file with size > 150 MB without any issue. If your QBB file size is 3 GB, I would highly recommend to split your primary company file (QBW) immediately.

Company files was 150mb on Tuesday when backed up. The same company file on Wednesday was 3gb when backed up.  

Good afternoon, @Dundeeboy59. 

Thanks for reaching back out to the Community and adding some extra clarification about your company file. I hope your weekend is going well so far. 

Since you're still having an issue after trying the troubleshooting steps, I recommend contacting our Customer Support Team. They'll be able to use a screen share to help walk you through some additional details. Here's how: 

1. Go to the Help menu. 
2. Pick the QuickBooks Desktop Help option. 
3. Click the Contact Us hyperlink. 
4. Type in your question and hit Let's Talk. 
5. Scroll down and choose to Get a callback. 

In addition, here's a guide that can help you out in the future: Use the Condense Data utility. 

Let me know how the phone call goes. I want to make sure that you're able to get back to running your business. I'm only a comment away if you need me. Bye for now!

@Dundeeboy59 

Run the Verify/Rebuild Data utility. Then run the backup again. Any difference?