For this new Cloud VPS Hosting environment, we have setup a cluster of five servers; four active servers and one standby server, along with one controller server with failover solution to ensure 100% uptime and redundancy. Out of these 5 servers, 1 server will always remain as a standby server and won't host any data. A replica of all the hosted accounts will be created on each of the remaining four active servers. In the case of a failure with any one of the four active servers in the cluster, all the hosted virtual servers will function from any of the remaining three active servers. The controller server will take care of the switch over and ensure that all virtual servers function from one of the remaining three active servers. All four active servers are also equipped with Redundant Shared Storage with RAID 10, so disk failure on any individual server will not result in that individual server becoming unavailable.
|