> We are faced with the task of moving our 3 server setup to a new > co-location facility while avoiding any downtime. Let me tell you about our > situation. We have 3 NT servers; mail,web and DB. We DO have one extra > server which is essentially unused. The concern is really for ONE website > on a single domain.
A tip for your DNS when moving... Change the TTL values down to an insanely low value of about 15-20 seconds, then wait whatever your CURRENT TTL value is plus an extra day to make sure the NEW TTL is all that people are seeing. When you do the move, the DNS changes will be seen everywhere on the net within a minute or two. This means you can make the change and turn the old server off immediately after (within a minute or so) to prevent any problem with data synch. Having the TTL at the low values until everything is ready to go back again will help with that situation as well. Once everything is back to the old servers at the new location, change the DNS and turn the temp server off. Then you can change your TTL values back to normal. The only downside of having your DNS values so low is that it uses more bandwidth because the clients are continually asking for the IP address on almost every page request. It may make the site appear to act slower than normal, but unless your DNS server is overloaded right now, it should not present a problem. I run a dyndns service with 1600 or so domains running on a 15 second TTL and have never received a complaint about speed from anyone I host DNS for. -Justin Scott, Lead Developer Sceiron Internet Services, Inc. http://www.sceiron.com ______________________________________________________________________ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm ------------------------------------------------------------------------------ To unsubscribe, send a message to [EMAIL PROTECTED] with 'unsubscribe' in the body or visit the list page at www.houseoffusion.com
