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Website Migration Between Servers Without Downtime

Contents
  1. When you need it
  2. What gets moved
  3. How downtime is avoided
  4. The delicate parts
  5. Common questions
  6. Will there be downtime?
  7. Will mail survive?
  8. How many sites at once?
Published
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~2 min
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180
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8 reviews
Author
Yevhen Fostenko
Senior Backend & DevOps Engineer
Website Migration Between Servers Without Downtime Article
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Moving to a new server usually comes with downtime, missing mail or half-broken sites. Done properly, the migration carries everything across with minimal interruption and keeps both mail and SEO intact.

When you need it

  • slow or unreliable hosting;
  • moving to a stronger server as you grow;
  • consolidating several sites onto one server;
  • changing provider.

What gets moved

  • the files of every site;
  • databases (consistent dumps);
  • mail with all mailboxes;
  • DNS, SSL and cron jobs.

How downtime is avoided

Data is synced to the new server in advance, then a final delta sync and a DNS switch with a lowered TTL. The old server stays live until DNS has fully propagated.

The delicate parts

  • mail: mailboxes moved without losing messages;
  • SSL: certificates issued on the new server beforehand;
  • file permissions and paths inside configs;
  • cron and background jobs.

Common questions

Will there be downtime?

Minimal — thanks to pre-syncing and the TTL drop.

Will mail survive?

Yes, mailboxes and messages are carried across.

How many sites at once?

Any number — from one to an entire server.

Planning a move? I will migrate the sites without losing data and with minimal downtime.

Tags: migrationhostingdnssslmail
Need help with this?
Website Migration Between Servers
from 2000.00 грн.
Order via Telegram More about the service →
Free consultation and estimate. I reply quickly.

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