Configure Linux to regularly sync cached data to disk

The [sync](https://linux.die.net/man/8/sync) command "writes any data buffered in memory out to disk". As far as I understand, data may be buffered in memory for very long time, even if the disks have no activity. How can I properly configure Linux to automatically sync regularly? The scenario is a storage server, where I would like to prevent cached data being prevented from being written to disks for too long, which leads to corrupted data in case of system crash or power loss.