Practical technology guide

How to Move a Website to a New Host Without Downtime

Moving a website to new hosting sounds risky, and done carelessly it is. With a plan, though, a migration can happen with little or no visible downtime and without disturbing your email. Most of the work is in the preparation, not the switch itself.

By Symnetrix / / Approximately 5 minute read

Know what you are moving first

Before anything moves, it helps to map what exists: the website files, any database, the domain, the DNS records and where email is handled. Migrations go wrong most often because email lived somewhere nobody accounted for and got knocked over by a DNS change. A clear picture up front prevents the nasty surprises.

Set up the new host before switching

The safe approach is to build the site fully on the new host and test it there, before pointing the domain at it. That way the new home is proven working while the live site carries on untouched. Only once you are happy does anything change for visitors, which removes most of the risk from the actual move.

Lower the DNS settings in advance

DNS changes take time to spread across the internet, controlled by a setting called TTL. Reducing it a day or two before the move means the switch propagates quickly when you make it, shrinking the window where some visitors see the old host and some the new. It is a small step that makes the cutover far cleaner.

Keep the goal practical. The best technology choice is the one that fits the building, workload and level of support available.

Protect the email during the move

Because email and the website share the domain, a careless DNS change can stop mail flowing. The mail records need to be carried across deliberately and left pointing at the right place, rather than wiped when the website records change. Keeping email working through the move is usually the part that needs the most care.

Make the switch and watch it

With the new host tested and DNS prepared, the cutover is simply pointing the domain across. After it, the site and email are checked from more than one device and connection, because your own browser may still be remembering the old address for a while. A short period of watching confirms everything has landed where it should.

Keep the old host briefly

It is worth keeping the old hosting active for a little while after the move, not cancelling it the moment the new site appears. That leaves a fallback if something was missed and covers the short period while the change finishes spreading. Once everything is confirmed stable, the old host can be retired.

What to do next

Before moving, write down where your site, domain, DNS and email each live, and confirm you can access them. That single list is what turns a hosting move from a gamble into a controlled, low-risk job.

Symnetrix can plan and carry out a hosting move that keeps your website and email working throughout, with the DNS and email records handled carefully. Learn more about website hosting in Hastings and East Sussex, or contact Symnetrix to discuss your setup.

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