> ## 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.

# Disks

> Plan, attach, expand, and operate block storage for Nubis Compute instances.

## Separate server compute from persistent data

If a workload stores meaningful data, it should rarely depend only on the instance root disk. Attached disks keep storage growth and recovery planning more deliberate.

## When to use attached disks

* Application data should live outside the OS disk
* A database or queue needs persistent storage
* Storage growth is likely to outpace CPU or memory growth
* You want cleaner recovery and migration patterns

## Disk workflow

<Steps>
  <Step title="Create the disk in the same region">
    Keep the disk close to the instance it will serve.
  </Step>

  <Step title="Attach and format it correctly">
    Mount the disk using the filesystem your application expects.
  </Step>

  <Step title="Persist the mount configuration">
    Ensure the application still sees the disk after reboot or recovery.
  </Step>

  <Step title="Resize before you are out of space">
    Grow storage intentionally and verify the filesystem expansion completes.
  </Step>
</Steps>

## Continue with

* [Volumes](/console/volumes)
* [Manage instances](/services/nubis-compute/servers/manage-instances)