Mail Server DRBD

Project Description :

The requirement came from an well known electric supply board. There were 2 sites connected with 10 MBPS Lease line. Client requirement was to set up a cold DR. They could effort a minimum downtime, but they could not tolerate any data loss. And the main challenge was that, the customer already had existing old storage and they were not agree to buy any more storage which was site to site replication enable. So they were looking for an opensource based non-expensive solutions.

Challenges :

This scenario could have been handled by site to site storage replication technology. But for that the storage should have facility to do this kind of activity. The existing storage did not have that facility because of the old model.

Proposed Solution :

The solution I designed for the client was very-much cost effective. Instead of copying data over the MPLS through script I proposed to implement a DRBD layer on top of OS to sync the data real-time basis. In this architecture any mail should store in to the storage through DRBD adapter , because this adapter can take care of the data replication to DR site after commiting the data into local storage.