The actual time depends on the computing power of your model, the number of media indexing files, and the number of packages installed. The DSM update takes 10 to 20 minutes, while the package update may take more than an hour.
DSM 7.0.1 will restart your Synology NAS.If you want to update to the latest version now, please go to Synology Download Center and manually update your DSM. The update is expected to be available for all regions within the next few weeks, although the time of release in each region may vary slightly.