Sounds just like the data centre I ran the services for - except that we used ICL mainframes ....yuk!!
Ian On 23/11/2010 18:55, Jack Coats wrote: > I helped build a 'small data center', we put in 3 1MW diesel generators to > feed two 1MW APC UPSes, that ran > the data center. The AC ran off of the diesel generators and grid power. > We ran full time off the APC UPSes, > and if the commercial power failed, we automatically brought up all 3 > generators. Assuming one would fail, > the others could carry the full load. If one did not fail, the one with the > longest run time in the logs would be > shout down. The UPSes were big enough to run the data center at full load > for about 20 minutes, but it should > be no more than 60 seconds before we were on generator power if commercial > failed, or was out for more than a few > moments. > > In the old days I worked on IBM mainframes, and a small mainframe (4341 if I > remember right) had a generator > set to help isolate the power. Internal to that machine the generator set > generated 400Hz, but we fed it from our > commercial building power into the generator. It was not mechanically > efficient, but it kept the machine going. > The HVAC was on regular building power. ,,, Even at larger datacenters where > I worked, the idea was enough > building UPS to keep the computer and networking going. The UPS and > building HVAC and a few essential > services were powered by the generator sets if commercial power died, and we > tried to have power fed from two > or more separate sub-stations linked to different parts of the 'grid'. One > side on the same 'grid feed' as a local > hospital or two if possible ... their power seems to get fixed first :) ... > but at the ones where I was, no major > fly wheel storage or things like that. > ------------------------------------------------------------------------------ > Increase Visibility of Your 3D Game App& Earn a Chance To Win $500! > Tap into the largest installed PC base& get more eyes on your game by > optimizing for Intel(R) Graphics Technology. Get started today with the > Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. > http://p.sf.net/sfu/intelisp-dev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1153 / Virus Database: 424/3274 - Release Date: 11/23/10 > > ------------------------------------------------------------------------------ Increase Visibility of Your 3D Game App & Earn a Chance To Win $500! Tap into the largest installed PC base & get more eyes on your game by optimizing for Intel(R) Graphics Technology. Get started today with the Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs. http://p.sf.net/sfu/intelisp-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
