In message
-septe
mber.org, at 20:10:12 on Sun, 28 May 2017, Recliner
remarked:

That's why it's not wise to make precise accusations at this stage. Of
course, any professional data centre shouldn't collapse for most of a day
if there's a power supply problem. It should have UPS

But unlikely to have hours worth of UPS.

and ample backup power, plus, perhaps duplicated grid connections.

Yes, they should have duplicated grid connections, although that ca be
challenging if the reason the datacentre has been located where it is
results from a local power source (a hydro dam is a common example).

But even with all the precautions, it's well nigh impossible to exclude
every single-point-of-failure, which can easily be in the equipment
which manages the redistribution of power during an outage.
--
Roland Perry