I have been searching online for some inforamtion about best practices for enterprise UPS power backup. We have over 200 servers, I know that is not alot in comparison, but most of our equipment is quite old and has some very high power requirements.
We currently run a very large (and old) Mitsubishi battery backup system that is supposed to keep the whole datacenter up for up to an hour. However its out of warrenty and we have recently been having some issues with it.
What are some good solutions as far as efficiency, redundancy, and cost? Im not asking for product advice Im just asking for solutions in general. For example would it more more efficient or better to have one smaller UPS per rack, or one larger rack per row, or one huge system that backs up everything?