slave that is sufficiently short that you are sure that the slave will shutdown before the master. If the shutdown is done with a poweroff, this will also save power so that the master can stay up longer.

Q:How do I ensure that my database server is correctly shutdown?

A:You simply add whatever commands are necessary in the appropri- ate case statements in /etc/apcupsd/apccontrol, which is a standard script file that is called to actually do the shutdown. Alternatively, you can add your own script file that will be called before doing the commands in apccontrol. Your script file must have the same name as the appropriate case statement in apccontrol; it must be executable; and it must be in the same directory as apccontrol.

Q:I have Win2k Advanced server, and when starting the service, get: Could not start the Apcupsd Server service on Local Computer. Error 1067: The process terminated unexpectedly

A:The most common error causing your problem is an incorrect serial port specification on your DEVICE directive. It should be:

DEVICE /dev/com2

On WinNT machines, and probably Win2000 machines you MUST use /dev/com2 unless you modify the behavior of the boot process to prevent Windows from probing the port. This is documented in our manual for WinNT. Although I imagine it is the same for Win2000, I am not sure.

The second most common problem is bad placement of the files i.e. you did not install them in c:\apcupsd Unfortunately for the current release, this path is “hard coded” into the binaries.

The third most common problem is that you did not run the setup.bat script after loading the files. This is necessary to install apcupsd as a service.

If all the above fails, try starting apcupsd by hand inside a CYGWIN rxvt window if you use an rxvt window rather than a DOS window, you will see many more of the error messages.

In addition, most of the apcupsd startup errors are reported in: c:\apcupsd\etc\apcupsd\apcupsd.events

Many error messages associated with Windows services will be re- ported in the Windows System Log.

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APC UPS control system manual Device /dev/com2
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UPS control system specifications

APC UPS (Uninterruptible Power Supply) control systems are vital components for ensuring uninterrupted power supply and protecting critical equipment from power interruptions, surges, or fluctuations. Designed by Schneider Electric, APC UPS systems are renowned for their high quality and reliability. They utilize advanced technologies and features to suit diverse applications, from home offices to large industrial settings.

One of the main features of APC UPS systems is the ability to provide backup power during outages. This is achieved through a battery system that activates immediately when the mains power fails. This seamless transition minimizes downtime and ensures that electronic devices continue to operate, protecting data integrity and equipment lifespan.

Another significant characteristic of APC UPS systems is their intelligent management capabilities. Most models come with PowerChute software, which provides users with real-time monitoring of power conditions and the status of the UPS. This software allows for graceful shutdowns of connected devices during extended outages, thereby preventing data loss and damage to devices.

APC UPS systems also incorporate advanced technologies such as Automatic Voltage Regulation (AVR). AVR technology ensures that the output voltage remains stable by correcting minor fluctuations without switching to battery mode. This not only prolongs the battery life but also provides a consistent power supply to the connected equipment.

Thermal management is another critical aspect of APC UPS control systems. The design often includes efficient cooling systems that prevent overheating, ensuring optimal performance and longevity of the unit. Some models feature EcoMode, which reduces energy consumption and lowers operational costs by working at high efficiency only when battery backup is not required.

APC UPS systems are designed with scalability in mind. Users can easily add more batteries or connect additional UPS units to accommodate growing power needs. Features such as hot-swappable batteries and modular design facilitate easy upgrades and servicing without interrupting power supply.

In terms of connectivity, APC UPS products often feature multiple options including USB, RS-232, and network management capabilities. This enables users to connect remote management tools and integrate the UPS with existing IT infrastructure.

In summary, APC UPS control systems deliver reliability, efficiency, and advanced technology features that cater to a wide array of power protection needs, making them a trusted choice for individuals and businesses alike.
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