"Isolated grounds" were developed for early computers that were very sensitive and were installed in an office environment where all sorts of other equipment was also connected that put electrical noise on the line. Today's boxes are much more stable, as evidenced by the fact that nearly every home has one, and power corruption problems are rarely seen. The much more sophisticated servers and storage we install in data centers does...
need good grounding, but that does not mean a true "isolated ground." We'll discuss this in more depth in an upcoming blog.
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