This article applies to sync software when running local licences of EQ with a shared data folder on your LAN.
Ensure that you do not subject a working EQ data folder to any synchronisation software, this includes internally or to remote/cloud storage. Examples to avoid are cloud storage such as Dropbox, Sugarsync, Box, SpiderOak and others.
Do not enable Microsoft Sync as this will attempt to replicate copies of EQ data to local PCs and will cause conflicts resulting in error messages and data loss.
Using file synchronisation software wouldn't work for EQ, or other applications that use databases in a similar way.
When you use EQ there are thousands of files that store parts of the data. The application works with different but connected database files for your customers, orders and products etc. Performing 1 action in EQ could update several files at once so the files are constantly changing. When synchronisation software notices a file has changed, it will immediately copy it to upload it to cloud storage. EQ could be changing multiple files at a time and the synchronisation software will keep trying to copy them. When synchronisation software does this it briefly locks access to that file, and that would mean that EQ could not write data to it, at the same time. The result would be EQ not being able to work correctly and the database files stuck trying to synchronise.
Synchronisation software is well suited to "flat" file types like Office documents and often provide their own tools for multiple users to work on the same file at once. This can't happen with database files, such as those used by EQ.
Backups
It is possible to use synchronisation software as a backup destination. EQ allows the user to specify a folder location to save backups to. Depending on your backup settings backups can happen automatically during an upgrade, during system maintenance or manually by a user. A backup creates 1 flat file that could then be synchronised and stored in the cloud. This helps protect against hardware failure or theft.
Summary
In summary; synchronisation software cannot work on database applications like EQ. If you already use synchronisation software in your business, you could synchronise EQ's backup folder location in order to store backups in your cloud storage.