You can store backups there, and let QB rotate them = manage them for you.
Don’t use Windows to Copy. Use the QB program’s own Backup Routine.
Resolution for 'Backup routine issue: 'Can QB Desktop 2017 backup my data file to a NAS? If not why not?' available: Yes.
The Backup routine issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the Backup routine issue yourself by looking for a resolution described in the article. If it is a complex Backup routine issue or you are unable to solve the issue, you may contact us by clicking here or by using other Backup routine support options.
For more information about resolving issues related to Backup routine in Quickbooks/QBO or to get support for the issue 'Can QB Desktop 2017 backup my data file to a NAS? If not why not?', click the link below: