UltraDNS SiteBacker continually monitors both primary and standby servers from multiple sites within UltraDNS’s global Managed DNS infrastructure.
Vercara UltraDNS® SiteBacker is a cost-effective monitoring and failover solution for companies of all sizes. Unlike competing solutions, SiteBacker requires no additional dedicated hardware or software and can be quickly deployed with minimal effort. Furthermore, it scales seamlessly to meet the growing demands of both local and global infrastructures.
The SiteBacker service leverages the UltraDNS Managed DNS infrastructure, a carrier-class DNS services platform that supports a significant portion of key domains on the Internet. Monitoring agents at multiple locations across the globe continually perform standard protocol or transaction-based testing against preselected servers. Each server is monitored by multiple agents to assure testing integrity. If pre-configured thresholds for the number of probes and locations confirming a particular test has failed are exceeded, SiteBacker concludes the corresponding server is down and initiates server failover. This failover mechanism involves automatically modifying the DNS response record for the monitored server. In addition, an email alert is sent to a list of predetermined contacts. When the server is restored to service, SiteBacker automatically recognizes the server’s online status and restores it to in-service by replacing the DNS response record with the original one.
In the event of a potential outage or server downtime, SiteBacker’s monitoring and probing agents will send an automated alert notifying you of the issue. SiteBacker will then automatically redirect traffic to the designated disaster recovery server(s) on standby. When the issue is resolved, traffic will redirect back to the primary server.
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