How long does a server migration take?

For a typical small business, a few weeks of preparation, a cutover measured in hours over a weekend, and about a month running the old system alongside the new one before decommissioning. The moving of data is the quick part; the inventory, testing and verification around it are the project.

Preparation dominates because that is where the surprises live. Someone has to inventory every system on the server, every integration that touches it, and every credential involved, and that exercise reliably surfaces things nobody remembered: the utility the workshop depends on, the scheduled task that emails a report, the application whose licence is tied to the hardware. Finding those in week one costs an afternoon. Finding them on cutover night costs the weekend.

The cutover itself is deliberately short because the heavy copying happens in advance, while the old system is still live and in use. Only the changes since that bulk copy move at cutover, which turns a potentially day-long operation into a few hours. It happens outside business hours, and it ends with a verification checklist ticked by a person: can everyone sign in, does each application open, has every integration been tested by actually sending something through it.

Then the overlap, which is not indecision but insurance. Keeping the old server for a month gives you a rollback path and a place to find whatever was missed, and it costs very little. Decommission it deliberately when you are confident rather than letting it moulder: export what must be retained, destroy the data securely, and document what was destroyed and when. If a proposal you are reading has no preparation phase and no overlap, it is not a faster migration, it is a riskier one: 1800 456 567.