How to transfer hosting with no down time ?
What about my Database?
If you are concerned about your databases staying up-to-date, all you need to do is disable your databases so that they cannot update while we complete the transfer. We require up to 72 hours for all transfer requests. The time will depend on how large is your transfer.
After the transfer, you can create an A record to redirect all visitors to the new server; this way you do not need to worry about propagation of the new name servers. Now your visitors will all be directed to the new site and the new databases. Now the new databases will have all of your current information and can update.
Also, after the site transfer, you can create a MX record so your emails will all be delivered to the new server and not need to wait for propagation.