End of Service Life
The point at which a vendor (or the market) considers a product life-cycle fully closed, sometimes used interchangeably with EOS but technically the broader, final milestone.
EOSL is sometimes used loosely as a synonym for End of Service (EOS), but strictly refers to the complete end of a product's supported life cycle, including any extended or paid-support options. For practical Power8 planning purposes, treat a model's published EOS date as the operative deadline.
Related Terms
End of Service
The date IBM stops providing standard hardware maintenance, machine code updates, and security patches for a given server model.
Power8
IBM's 2014-generation Power processor and server family, spanning the entry S812 through the flagship E880, now fully past IBM's standard end-of-support window.