True 100% uptime?
Say I have Webserver A and B and datacenter 1 and 2 (DC1/DC2). I then use failover on the DNS.
DC1:
WebserverA
NS1
DC2:
WebserverB
ns2
If DC1 fails, NS2 automatically gives out new IP's, but what about DNS clients will still cache the old failing IP?
Is there anyway around this conundrum? Is there some magical BGP stuff that can be done on IP's so you don't have to mess with DNS?
