The APC UPS detects a utility power failure and switches to battery power.
If the utility power returns before the UPS has completely shut down its outlets, the server will not experience the power toggle required to trigger the "Restore on AC Power Loss" function. The server remains dead.
Your APC UPS is useless for WoL if the motherboard BIOS isn't perfect. apc ups wake on lan best
Before configuring any software, your hardware must be capable of receiving and processing the Wake-on-LAN broadcast while in a soft-off state (S5 power state). Step 1: Motherboard BIOS/UEFI Configuration
or "Last State". When the UPS detects stable utility power and restarts its outlets, the computer automatically boots up without needing a WoL packet. Active Wake on LAN The APC UPS detects a utility power failure
In the NMC web interface, go to Configuration > Outlet Group > Controls . Set a delay (e.g., 60 seconds) to ensure the power is stable before the server tries to boot. 4. Key Considerations for Reliable Operation
In a best-case scenario, the UPS network card or a secondary low-power device (like a Raspberry Pi or a router) detects that utility power is restored. It then broadcasts the Magic Packet, bringing your infrastructure back online without human intervention. Hardware Requirements for the Best Setup Your APC UPS is useless for WoL if
Typically, a computer's Ethernet port stays alive via the +5VSB (Standby Voltage) rail from the power supply. When the UPS enters deep discharge or "sleep" mode (after a low-battery shutdown), it often cuts all outlet power to save the battery.
The Ultimate Guide to APC UPS and Wake-on-LAN (WoL) Imagine a power outage hits your home server or office workstation. Your APC Uninterruptible Power Supply (UPS) does its job perfectly. It keeps the machine running through the flicker, and when the battery drains low, it triggers a safe, graceful shutdown to prevent data corruption.
APC (American Power Conversion) UPS (Uninterruptible Power Supply) Wake on LAN is a feature that allows administrators to remotely wake up or restart servers that are connected to an APC UPS device. This feature uses the Wake on LAN (WOL) protocol, which sends a special packet of data to the server's network interface card (NIC), instructing it to power on or wake up.