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docs/systems/README.md

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+# System Configurations
+
+This directory contains documentation for each system configuration in this repository.
+
+## Systems
+
+- [Desktop (matt-nixos)](./matt-nixos.md) - Main desktop computer
+- [NAS (jallen-nas)](./jallen-nas.md) - Home server and NAS
+- [NUC (nuc-nixos)](./nuc-nixos.md) - Intel NUC
+- [Raspberry Pi 4](./pi4.md) - Raspberry Pi 4
+- [Raspberry Pi 5](./pi5.md) - Raspberry Pi 5
+- [MacBook Pro (nixOS)](./macbook-pro-nixos.md) - MacBook Pro running NixOS
+
+## Common Configuration
+
+All systems share certain common configurations through the modules system. These include:
+
+- Base system configuration
+- User management
+- Network configuration
+- Security settings
+
+Each system then adds its specific configurations on top of these common modules.

docs/systems/jallen-nas.md

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+# NAS Server (jallen-nas)
+
+This document describes the configuration for the NAS server system.
+
+## Hardware
+
+The NAS server is built on AMD hardware:
+
+- CPU: AMD processor
+- Hardware-specific modules:
+  - `nixos-hardware.nixosModules.common-pc`
+  - `nixos-hardware.nixosModules.common-cpu-amd`
+  - `nixos-hardware.nixosModules.common-cpu-amd-pstate`
+  - `nixos-hardware.nixosModules.common-hidpi`
+
+## Services
+
+The NAS hosts various services:
+
+### Media Services
+
+- **Jellyfin** - Media server
+- **Jellyseerr** - Media request manager
+- **Sonarr** - TV show management
+- **Radarr** - Movie management
+- **Lidarr** - Music management
+- **Bazarr** - Subtitle management
+- **Music Assistant** - Music streaming integration with Home Assistant
+
+### Download Services
+
+- **Transmission** - Torrent client
+- **NZBGet** - Usenet downloader
+- **Prowlarr** - Indexer manager
+
+### Document Management
+
+- **Paperless-ngx** - Document management system
+
+### File Sharing
+
+- **Samba** - Windows file sharing
+- **Nextcloud** - Self-hosted cloud storage
+
+### AI Services
+
+- **Ollama** - Local AI model hosting
+
+### Smart Home
+
+- **Home Assistant** - Smart home controller
+- **Zigbee2MQTT** - Zigbee device integration
+- **MQTT** - Message broker for IoT devices
+- **Thread Border Router** - Thread network for smart home devices
+
+## Storage Configuration
+
+The NAS uses multiple storage devices:
+
+1. **System Drive** - For the operating system
+2. **Data Drives** - Configured as a storage array for media and data
+
+## Network Configuration
+
+The NAS is configured with:
+
+- Static IP address
+- Firewall rules for the various services
+- Tailscale for secure remote access
+
+## Backup Strategy
+
+The NAS implements a comprehensive backup strategy:
+
+1. **System Backup** - Regular backups of the NixOS configuration
+2. **Data Backup** - Backups of important data to secondary storage
+3. **Off-site Backup** - Critical data is backed up off-site
+
+## Usage and Management
+
+### Accessing Services
+
+Most services are available through a reverse proxy, which provides:
+- HTTPS access
+- Authentication via Authentik
+- Subdomain-based routing
+
+### Adding Storage
+
+To add additional storage to the NAS:
+
+1. Add the physical drive to the system
+2. Update the disko configuration
+3. Rebuild the system with `nixos-rebuild switch`
+
+### Monitoring
+
+The system can be monitored through:
+- Prometheus metrics
+- Grafana dashboards
+- Home Assistant sensors