Problems and Solutions with UPS Service (96788)

MORE INFORMATION

Workstations Don't Receive UPS Messages

In order for a workstation to receive a message from a server's UPS service it must actually be using a resource on that server and be running the messaging service.

UPS Stops Working After a Server Reconfiguration

If any special settings need to be made to the UPS entry in CONFIG.SYS (such as the "/port:com_" part of the line "DEVICE=C:\<lanman>\DRIVERS\UPSDRV.OS2") then they need to be checked after using the LAN Manager Setup program. Setup resets some non-default entries back to the defaults when it saves the configuration files. This can cause a previously functioning UPS to stop working if a COM port other than COM1 was specified on the UPS entry in CONFIG.SYS.

UPS Service Failures or COM Port Problems

Interrupt conflicts between hardware used by the UPS service and other devices can manifest themselves in a number of ways. Trying to share the COM port may return an "Invalid device" error. The UPS service itself may fail to start. A NET 2480 error may be returned, indicating that the driver couldn't be accessed or was misconfigured.

If the load order of the drivers in CONFIG.SYS is incorrect, it can also cause symptoms similar to a hardware conflict (COM port doesn't exist when it really does). See Appendix B of the "Installation and Configuration Guide" for information on the load order.

If an "Error opening device" is reported for the UPS driver, it may be corrupted. Expand the driver off of the installation disks and replace the file to test this.

Invalid parameters in the [UPS] section of LANMAN.INI may prevent the UPS service from starting.

There are reported problems with an IBM dual asynchronous board where using the UPS service on a port other than COM1 either prevents the use of COM3 (when the UPS is on COM2) or does not work at all (UPS on COM3).

No Indication of UPS Shutdown on the Server

This is normal behavior. During shutdown three messages are displayed: NET5150, NET 5152, and NET 5153 (if power is restored before shutdown, a NET 5151 will be sent). After the last message, the server screen returns to the one that was showing before power failure. No further visual notification of shutdown is given. If it was at an OS/2 command prompt, then you can still type on that line; however, once you press ENTER, no further actions can be taken. Once power is restored the server is rebooted automatically.

In one instance, intermittent machine shutdowns with no apparent reason have been traced to the use of an unshielded UPS data cable.

Auto-shutdown on Startup

A mismatch between the signal polarity settings ("voltlevels" in LANMAN.INI) for the UPS service and what the UPS actually supplies can cause the server to shut down at startup and continuously cycle through the reboot process.

Data Corruption on UPS Shutdown

If the UPS service is run on a server when there is no UPS attached, a detected power loss can initiate an attempted orderly shutdown and corrupt files.