To utilize Wake-on-LAN effectively with APC hardware, you need a "Packet Forwarder." This is a device that remains powered by the UPS even during outages. The best candidates are:
Sometimes a server is powered on (drawing 200 watts) but frozen. WoL cannot help because the machine is already on (Network stack is locked). APC UPS can help with a "Hard Reboot."
Access the NMC via its web interface (using DHCP or static IP).
If you must use WoL (e.g., you want the server to stay off until you're ready), use a secondary device that stays on or boots faster than your server, such as a Raspberry Pi or a router like the UniFi Dream Machine apc ups wake on lan best
provide advanced remote management, they do not inherently feature a "WoL Sender" for downstream clients. Schneider Electric Community Troubleshooting WoL Behind a UPS NMC 'Wake on LAN' support - Schneider Electric Community
Here's a step-by-step explanation of the process:
: Set the minimum battery runtime required (e.g., 5 minutes) before the UPS resumes output power. To utilize Wake-on-LAN effectively with APC hardware, you
If you have done this, your server is ready to wake the moment the APC UPS restores utility power.
Windows Fast Startup can put the system into a hybrid hibernation state (S4) instead of a clean soft-off state (S5). This frequently breaks WoL functionality. Disable it in the Windows Control Panel under Power Options.
If Wake-on-LAN feels too complex or fails due to hardware limitations, there is a popular alternative built directly into most motherboards: . APC UPS can help with a "Hard Reboot
Ensure you check the "Replace Battery" date, as a failed battery won't allow a graceful shutdown, even if you can wake the server remotely.
The "best" configuration understands that WoL works in the first 90% of the battery runtime, but fails in the final 10%. By configuring your APC UPS to use , BIOS AC Recovery , and a Low-power WoL gateway (like a Raspberry Pi), you achieve 99.99% remote availability.
: Enter your server or PC's BIOS and look for settings under Power Management or Advanced . Set "Restore on AC Power Loss" to "Always On" or "Last State" .
You have three options:
The Ultimate Guide to APC UPS and Wake-on-LAN (WoL): Best Practices, Setup, and Troubleshooting Introduction