Power and Batteries
Reading power use
- PDU display (rear panel): input voltage, current and power. Use the buttons on its side to step through readings, including the PDU's IP address.
- PDU web page or EnGenius Cloud: total and per-outlet power, outlet on/off control and history. See Switch and PDU.
- HiveSight: outlet status, when the PDU is cloud managed.
Typical draw is around 200-250 W. It depends on the edition, the options and the workload, so read the actual figure from your PDU.
PDU outlets
- NUC PRO
- HR-01-2
| Outlet | Powers |
|---|---|
| 1, 2, 3 | Nodes 1, 2, 3 (the plugs on the nodes are labelled 1, 2, 3) |
| 4 | Switch |
| 5, 6 | Free |
| Outlet | Powers |
|---|---|
| 1, 2 | Nodes 1, 2 |
| 3 | Switch |
| 4, 5, 6 | Free |
The HiveSight SBC and a PoE gateway are powered from the switch, not the PDU.
Restart a hung node
There is no remote console (KVM) at this time. To restart a node that stopped responding:
- Try a clean shutdown from your HCI first.
- If it doesn't respond, switch its outlet off in the PDU web page or EnGenius Cloud, wait 10 seconds, and switch it on. The node starts by itself.
Don't switch off the switch outlet: it also powers the HiveSight SBC (and the StorMagic witness) and the gateway.
Batteries and generators
The P-EDC runs from HiveRadar Off-Grid batteries (Delta 3 Pro, Delta 3 Plus), a UPS or a generator.
- Use a pure sine wave output. Modified sine wave can damage the power supplies.
- Size it for the P-EDC's full load with margin, and keep it grounded.
- Test the setup under load before you rely on it in the field.
- Connect a HiveRadar Off-Grid unit to HiveSight to see its charge and runtime, see HiveSight Setup.
Estimating runtime
Runtime (hours) ≈ battery capacity (Wh) × 0.9 ÷ power draw (W)
For example, a 4096 Wh battery at 300 W lasts about 12 hours. Use your own PDU reading for the draw.
Making a battery last longer
- Shut down VMs you don't need
- Use the Eco fan profile if the room is cool
- Disconnect accessories you don't need
When the battery gets low, shut down the HCI cluster gracefully before it runs out, then switch off the PDU outlets. See Shut Down and Pack Up.