The operator must employ discipline and critical thinking, and resist the temptation to rate everything as “99 out of 100” or “Red – critical.” The other point to remember is that items that may be rated relatively lightly, e.g. efficiency or current operating conditions, will factor into the total weighting of a given asset in comparison. For example, if two assets are both at a critical failure point, but one has a far greater option for efficiency or some lower-weighted factor, the asset with the better efficiency opportunity will be rated above that of the less efficient option.
The final step in the exercise is to apply the criteria and weighting to the replacement costs built in “Step 3” of the EOL exercise. Assets that reach a threshold for replacement – generally a weighting above 80 on a 100 point scale or the like – rise to the top of the list on an annual basis. The operator can then evaluate the total liability looming in the future or evaluate the relative EOL costs in one facility vs. the next.
The owner or operator then has a quantified peek into the future of the overall data center enterprise. The reality for most owners is that capital is limited and competitive, and options may exist to divest vs. re-invest, build vs. re-power, or expand to take advantage of a location.