# Troubleshooting your instance

Diagnose and resolve common problems with your GitHub Enterprise Server instance using supported tools and procedures.

## Links

* [Troubleshooting upgrades and migrations](/en/enterprise-server@3.21/admin/troubleshooting-your-instance/troubleshooting-upgrades-and-migrations)

  Resolve problems that occur during or after an upgrade to your GitHub Enterprise Server instance.

* [Troubleshooting storage and disks](/en/enterprise-server@3.21/admin/troubleshooting-your-instance/troubleshooting-storage-and-disks)

  Resolve problems with disk capacity, disk performance, and storage configuration on your GitHub Enterprise Server instance.

* [Troubleshooting GitHub Actions data and database health](/en/enterprise-server@3.21/admin/troubleshooting-your-instance/troubleshooting-github-actions-data-and-database-health)

  Resolve problems with the databases, backups, and storage that GitHub Actions depends on.