Apcupsd Frequently Asked Questions

Currently apcupsd supports only APC UPSes. However, some companies such as Hewlett Packard put their own brand name on UPS manufactured UPSes. Thus even if you do not have an APC branded UPS, it may work with apcupsd. However, you will need to know the corresponding APC model number.

With release 3.8.0, apcupsd now runs on Win95/98 and WinNT machines (and possibly on Win2000). With the exception of domain name resolution on MASTER and SLAVE directives (IP addresses must be used), all features of the Unix versions of apcupsd are implemented. The UPS EEPROM programming features of apcupsd have not been tested under Windows.

Depending on your CPU speed, you may see more or less of the CPU consumed by apcupsd. On a 400MHz Unix system, the CPU usage should fall well below 0.1%. On slower systems, the percentage will increase proportionally to the decrease in the CPU speed. On a 400Mhz Win98 machine, the CPU usage will be on the order of 0.5%. This is considerably higher than for Unix systems. However, compared to the 30% CPU usage by APC's PowerChute (the version on the CDROM shipped with my UPS), apcupsd's 0.5% is very modest.