I perform a backup of certain network drives three times a week. This backup used to take several hours (overnight), but now it takes roughly 20 hours. Most of the network drives are located in-house, but one is located in another location roughly one mile away. This remote location is linked to the main location by a VPN connection. According to the report, the backup of this particular network drive takes 13-14 hours. The amount of data on remote network drive is 5 GB. The VPN connection is controlled by two Sonicwall TZ190 firewalls. This has been happening for several months. Thanks.