The Mirror feature allows a user to create a local update server. Client computers will not download virus signature updates from ESETs servers on the Internet, but will connect to a local Mirror server on your network instead. The main advantages of this solution are to save Internet bandwidth and to minimize network traffic, since only the mirror server connects to the Internet for updates, rather than hundreds of client machines. This configuration means it is important for the Mirror server to always be connected to the internet.
Warning: A Mirror server which performed a program component upgrade (PCU) and has not been rebooted may cause an outage. In this scenario, the server would be unable to download ANY updates or distribute them to client workstations. DO NOT SET AUTOMATIC PROGRAM COMPONENT UPGRADES FOR ESET SERVER PRODUCTS! This does not apply to Mirrors created in ERAS.
The Mirror feature is available in two locations:
The administrator selects the method for activating the Mirror feature.
In large networks it is possible to create multiple Mirror servers (e.g., for various company departments), and establish one as central (at company headquarters) in cascade-style similar to an ERAS configuration with multiple clients.
The administrator must insert the product license key for a purchased product and enter the username and password to enable the Mirror feature in ERAS. If the administrator uses a license key, username and password for ESET NOD32 Antivirus Business Edition, then later upgrades to ESET Smart Security Business Edition, the original license key, username and password must be replaced as well.
NOTE: ESET NOD32 Antivirus clients can also be updated using a ESET Smart Security license, but not vice versa.