units are essential for graceful shutdowns, they do not typically support sending Wake-on-LAN (WoL)
| Problem | Cause | Best Fix | |---------|-------|----------| | Server won’t wake after UPS shutdown | NIC lost WoL config in S5 | Use Intel/Broadcom NIC; disable "Energy Efficient Ethernet" | | APC cuts USB power before WoL works | USB serial chip depowers NIC | Switch to NMC or serial (RS-232) connection | | Server wakes randomly | Broadcast WoL packets | Enable "Secure WoL" with password or directed packet only | | Dual PSU servers | Second PSU on different UPS | Connect both UPS to same output group or use single PSU for WoL | apc ups wake on lan best
Have you gotten WoL working reliably after a prolonged APC UPS shutdown? Share your setup below. 👇 units are essential for graceful shutdowns, they do
For IT professionals and home lab enthusiasts, the ultimate goal is a "lights-out" environment where systems can recover from a power failure without manual intervention. While APC UPS units excel at keeping hardware safe, many users mistakenly believe the UPS itself sends a "Wake-on-LAN" (WoL) signal to restart servers. In reality, the most reliable way to achieve this is through a combination of BIOS settings and strategic networking. Does an APC UPS Support Wake-on-LAN? While APC UPS units excel at keeping hardware