Quick answer: Migrate with no downtime by copying everything to the new server first, testing it privately with your computer's hosts file, lowering your DNS TTL in advance, then switching DNS only once the new server is verified. Keep the old server live for a few days as a fallback.
Moving a website to a new host worries most owners for one reason: downtime. Done correctly, a migration causes no visible interruption at all. The trick is to copy everything first, test it privately, and only change DNS once the new server is verified. Here is the safe sequence we use.
A day before you plan to migrate, reduce the TTL (Time To Live) on your domain's A record to 300 seconds. TTL controls how long the internet caches your DNS. Lowering it early means that when you finally switch, visitors move to the new server within minutes instead of hours.
Transfer all website files and export the database from the old host, then import both on the new server. For a control-panel account (cPanel or Plesk) a full account backup usually carries files, databases, email, and DNS zones in a single archive. Keep the old site fully online during this step - you are only copying.
This is the step that prevents downtime. Preview the site on the new server without touching public DNS by adding a line to your local computer's hosts file that maps the domain to the new server IP:
203.0.113.25 yourdomain.com www.yourdomain.com
On Windows the file is at C:\Windows\System32\drivers\etc\hosts; on macOS and Linux it is /etc/hosts. With that entry, only your machine sees the new server. Click through the site, log in, submit a form, and confirm everything works. Remove the line when you finish testing.
Because the site stayed live during testing, copy any content or orders that changed since Step 2 (a fresh database export is usually enough). Then update the domain's A record to the new server IP. Thanks to the low TTL, traffic shifts over quickly and cleanly.
Leave the old account running for three to five days. Stragglers with cached DNS keep working, and you have an instant rollback if anything needs attention.
Will my site go offline during the move?
No - the old site stays live while you copy and test; only the final DNS switch moves traffic, and a low TTL makes that near-instant.
How long should I keep the old server?
Three to five days, so cached-DNS visitors keep working and you have an instant rollback.
Every SoftSys managed VPS plan includes free migration handled by our engineers, and our managed WordPress hosting uses this exact zero-downtime process so your site never drops offline during the move. Open a ticket with your current host details and we will schedule the cutover with you.
