(in the office) Today, the UPS battery replace warning light lit up and there was a slight panic as the all the technical people will not be around the next few days.

But after thinking a bit further, I realise that in case of power failure, no client computers will be able to turn on in the first place and operations will be disrupted regardless of whether the UPS keeps the server up.

This makes me wonder if the UPS is really such a critical component? What do you think?