However recently they changed from APC to Eaton Powerware. While a quick scan of the web cant find the reason or exact date, I bet it had to do with quality.
APC, now owned by Schnieder Electric (the guys that make SqaureD stuff, et al) was always regarded as the best UPS for under 5000va. However, since IBM has focused more on large server arrays, the more robust Powerware units (which they have always been good at) is a better fit.
So beware that IBM UPSes sold here and elsewhere could very different depending on the year.
Our favorite IBM Ups (in the APC era is here)
