Power Topology

Documentation of the power distribution, battery backup tiers, and PoE trees.

1. Power Map

The lab uses a Two-Tier UPS strategy for the main rack, plus independent power for remote nodes.

graph TD
    %% Nodes
    Grid[<b>Wall Outlet</b><br/>Grid Power]
    EcoFlow[<b>EcoFlow Delta 3</b><br/>Tier 1: Whole Rack Backup]
    PDU[<b>9-Outlet PDU</b><br/>Rack Distribution]
    APC[<b>APC 850 UPS</b><br/>Tier 2: Network Stack]

    %% Compute Powers
    subgraph Compute [Compute Cluster (Tier 1 Power)]
        Reach[Server | <b>Reach</b>]
        Halo[Server | <b>Halo</b>]
        Edge[Server | <b>Edge</b>]
    end

    %% Network Powers
    subgraph Network [Network Stack (Tier 1+2 Power)]
        UDM[UDM Pro]
        Agg[USW Aggregation]
        Ent[<b>USW Enterprise 24 PoE</b><br/>PoE Source]
    end

    %% PoE Leaf Devices
    subgraph PoE_Leafs [PoE Powered Devices]
        RPiA[RPi 5 A]
        RPiB[RPi 5 B]
        U7[U7 Pro AP]
        FlexFront[<b>USW Flex</b><br/>Front Porch]
    end

    %% Remote Power
    subgraph Remote [Remote Zones (Independent Power)]
        Injector[PoE Injector]
        Flex25[<b>USW Flex 2.5G</b><br/>Remote Room]
        FlexBack[<b>USW Flex</b><br/>Backyard]
    end

    %% Connections
    Grid --> EcoFlow
    EcoFlow -->|AC| PDU

    %% PDU Distribution
    PDU --> Reach
    PDU --> Halo
    PDU --> Edge
    PDU --> APC

    %% APC Distribution
    APC --> UDM
    APC --> Agg
    APC --> Ent

    %% PoE Tree
    Ent -.->|PoE| RPiA
    Ent -.->|PoE| RPiB
    Ent -.->|PoE+| U7
    Ent -.->|PoE++| FlexFront

    %% Remote Logic
    Injector -->|PoE Power| Flex25
    Ent ===|Data Only| Flex25
    Flex25 -.->|PoE| FlexBack

2. Backup Tiers

Tier	Source	Runtime (Est)	Protected Scope
Tier 1 (Base)	EcoFlow Delta 3	High Capacity	Entire Rack (Compute + Network). Filters dirty power.
Tier 2 (Sensitive)	APC 850 UPS	Medium Capacity	Network Gear Only. Provides double-conversion/clean power for UDM/Switches.
Edge	PoE Injector	0 mins	Remote Switch (USW Flex 2.5G) - No backup currently.

3. PDU Layout (Main Rack)

Source: EcoFlow Delta 3 (AC Output)
Distribution:
1. APC 850 UPS (Feeds Network)
2. Server | Halo
3. Server | Edge
4. Server | Reach
5. (Empty)
6. (Empty)
7. (Empty)
8. (Empty)
9. (Empty)

4. PoE Power Budget (USW Enterprise 24 PoE)

The Main Switch powers a significant tree of downstream devices.

Front Porch Chain: Switch (PoE++) -> USW Flex -> Cameras (G4 Doorbell, G5 Turret).
Internal Ops: Raspberry Pi 5 A & B directly powered via PoE.
Wireless: U7 Pro AP (PoE+).