Windows File Replication and Windows Clustering between 3 Servers with a Simple Software

Windows File Replication and Windows Clustering Architecture

Evidian SafeKit provides Windows file replication and Windows clustering between 3 servers. This feature is an extension of a mirror application module with the replication of data on a third server supposed to be in a Disaster Recovery site (DR Site).

Windows File Replication and Windows Clustering between 3 Servers Architecture

Windows File Replication and Windows Clustering Implementation

2 SafeKit modules are required for implementing Windows file replication and Windows clustering between 3 servers: the application module and the spare module.

The application module works between server 1 and server 2 as a standard mirror module with

With the semi-synchronous real-time replication between server1 and server2, the application does not wait the acknowledgement of server3 before restarting its execution.

The other module (named the spare module) makes the real-time replication to the DR site.

Windows File Replication and Windows Clustering between 3 Servers Implementation

Note that this architecture can also be implemented by a mixed of a Hyper-V module and an application module. See the Hyper-V synchronous replication and automatic failover between 3 servers article. The advantage of the Hyper-V architecture is that the failover and the failback on the 3rd server are automatic while a manual procedure in the SafeKit web console is required for this architecture (see in the next sections).

Windows File Replication and Windows Clustering Installation

An application module named 3nodesrepliv2.safe has been developed as an extension of the mirror module to simplify the installation. And the SafeKit web console helps in the deployment of this module on 3 servers.

Windows File Replication and Windows Clustering between 3 Servers Installation 1

In the configuration wizard of 3nodesrepliv2.safe, the identity of the 3 servers are entered.

Windows File Replication and Windows Clustering between 3 Servers Installation 2

In the configuration, the path of the directory to replicate is set.

Windows File Replication and Windows Clustering between 3 Servers Installation 3

Among the 3 servers, the server in the disaster recovery site must be identified.

Windows File Replication and Windows Clustering between 3 Servers Installation 4

The first time, the server with the up-to-date data must be identified in order to synchronize data in the right way.

Windows File Replication and Windows Clustering between 3 Servers Installation 5

Finally, the system is high available

Windows File Replication and Windows Clustering between 3 Servers Installation 6

Windows File Replication and Windows Clustering - Failover to the Disaster Recovery Site

When server 1 and server 2 fail, the application failover to the DR site is possible with a manual procedure integrated in the administration console.

Windows File Replication and Windows Clustering between 3 Servers - Failover to the Disaster Recovery site

Windows File Replication and Windows Clustering - Failback from the Disaster Recovery Site

When server 1 and server 2 come back, the application failback from the DR site to server 1 and server 2 is possible with a manual procedure in the administration console.

Windows File Replication and Windows Clustering between 3 Servers Failback

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