> ## Documentation Index
> Fetch the complete documentation index at: https://docs.usenubis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Migrate servers

> Move virtual machines and server-based workloads into Nubis Compute with a phased, low-risk approach.

## Treat server migration as a sequence, not an event

Most migrations to Nubis Compute go more smoothly when they are broken into discovery, landing-zone design, test migration, validation, and cutover.

## Server migration workflow

<Steps>
  <Step title="Inventory the source servers">
    Capture CPU, memory, disk layout, OS version, open ports, scheduled jobs, attached services, and dependency relationships.
  </Step>

  <Step title="Map the target design">
    Decide on the Nubis project, instance sizing, disks, VPC placement, security rules, and public access model.
  </Step>

  <Step title="Prepare a pilot server">
    Move one representative workload first so your team can validate tooling, cloud-init, backup, and support processes.
  </Step>

  <Step title="Sync data and configuration">
    Reproduce application config, secrets, SSH access, and any attached data paths before traffic moves.
  </Step>

  <Step title="Cut over with rollback in mind">
    Keep DNS, load-balancer, and rollback steps documented before the final switch.
  </Step>
</Steps>

## What to validate before cutover

* The instance boots with the expected image and bootstrap logic
* Attached disks are mounted and application paths are correct
* Private and public traffic rules match the intended design
* Monitoring and backup coverage are active
* Billing ownership is correct for the project and organization

## Continue with

* [Launch instance](/services/nubis-compute/servers/launch-instance)
* [Cloud-init scripts](/services/nubis-compute/servers/cloud-init-scripts)
* [Load balancers](/services/nubis-compute/traffic/load-balancers)