 | ||
| Enabling NAT support for Volume Replicator | ||
|---|---|---|
| Prev | Security considerations for Volume Replicator | Next |
Network Address Translation (NAT) involves translating the Internet Protocol address (IP address) used within one network to an IP address that is known within another network.
To enable Volume Replicator in a NAT setup use the host name for configuring Volume Replicator by adding the host name and its NAT address to the hosts file, only if the host uses a NAT. If the Primary uses NAT you need to make the corresponding entry for the Primary host name and its NAT address on the Secondary, but you do not need to do this on the Primary, if the Secondary IP is visible from the Primary. However, if the Secondary also uses NAT then you must make an entry for the Secondary host name and its NAT address, on the Primary.
For the hosts within the Volume Replicator configuration, if even one of the hosts in the RDS is under a NAT, then it is best to set up NAT support for all the hosts.
For example, if both the Primary and Secondary are under a NAT setup, perform the following tasks in the given order, to ensure that replication happens correctly:
On the Primary, add an entry for the Secondary host name and its NAT IP address in the hosts file present at the following location:
<systemroot>\system32\drivers\etc\hosts
On the Secondary, add an entry for the Primary host name and its NAT IP address in the hosts file present in the following location:
<systemroot>\system32\drivers\etc\hosts
While creating the RDS, use the host names instead of IP addresses. This automatically maps to the NAT IP address using the entries in the hosts file. The replication is now enabled across NAT.
More Information