Hi, I have a bit of a problem with power. I am in a sort of in-the-middle-of-a-real fix stage, so i know my solution isn't perfect. But within its not-perfectness, here are my issues:
- My server pulls max 650W in an environment where power goes off for a few seconds-30 seconds regularly. Initially I had a Smart-UPS 750 that was able to deal with these intervals, with one exception. I have apcupsd running as a deamon and the system will in worst cases shutdown when there is X amount of time left in the batteries. The BIOS is configured to start up when power returns. Problem is: when power returns while the system is shutting down, the system seems to stay off. The BIOS never gets an event, so just shuts down the computer. Shutting down takes about 3 minutes, which is quite a lot. So, first question, how do you tell a shutting down machine that power is back, and it is not shutting down anymore, but rebooting? Secondly, we dont want these reboots. I can't buy an inverter with proper batteries, so I bought a second UPS ( RS 1500) , and placed it in series with the first one. Its a bit cheaper, so i placed it before the SmartUPS, and keep that one connected to the server over USB (and AC). This new UPS is not doing its job. If power goes off, it does switch to batteries, but the Smart UPS that it is feeding in to, immediatly switches to batteries, too. I ran a few tests: With a disconnected RS1500 (no AC in) - Connect the RS1500 to a moniter, and the monitor works. - Connect the RS1500 to the second power-unit of the server. The led light on the server goes on, but on the server-side the power cable makes a funny sizzling noise. - Connect the RS1500 to the Smart-UPS, the smart-UPS does not charge from the RS1500 batteries, and you do hear the sizzling sound on the Smart-UPS side. Also, the Smart-UPS indicates it has lost its power-source and it is running from batteries. - The orange LED is lit on the RS1500, which means, we are on battery now. There is no indication there is an overload. Plug the RS1500 in the grid - Light goes green, and the sizzling sound disappears. Question: is my RS1500 actually helping my Smart-UPS to feed the server with power? (and do i just need to add more batteries?) Or do i have a problem? The smart-UPS: http://www.apc.com/resource/include/techspec_index.cfm?base_sku=SUA750I The not-so smart one: http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BR1500I&tab=compare rgds, Reinier Battenberg Director Mountbatten Ltd. +256 782 801 749 www.mountbatten.net Be a professional website builder: www.easysites.ug _______________________________________________ LUG mailing list [email protected] http://kym.net/mailman/listinfo/lug %LUG is generously hosted by INFOCOM http://www.infocom.co.ug/ The above comments and data are owned by whoever posted them (including attachments if any). The List's Host is not responsible for them in any way. ---------------------------------------
