iowa
- DS916+ 4-bay advanced model with btrfs support
- 4x 6TB SATA in SHR configuration, btrfs filesystem
- 8gb RAM upgrade
Customisation
Enabled SSH, can login as root with my SSH key.
Docker
Installed from Synology Package Centre
Was going to use this to run artifactory but the free version isn't what I need. 
Drive replacement
Some notes about doing it, and setting up SMART/health checks etc. https://servicemax.com.au/news/synology-ironwolf-health-status/