For everyone wondering about Disaster Recovery/Business Continunity, this sort of stuff in IT can cost some serious money not only to impliment but also the need for regular testing along with upgrades for time to time - how much extra are you willing to pay for your ticket to cover the cost?
And each senario will have been considered on a likely hood of happening v cost of implimenting a DR/BC for it v cost of not having it.
In this case (from reading the thread) it appears to have been a power failure in a building shared with other businesses. Sharing a building will restrict your options and you will mostly likely be faced with a dead building (power wise) with no lighting, air conditioning, working lifts, facilities etc. To maintain normal operation you will need *another* building somewhere that is linked to your IT setup in the first building - nothing else would work in this senario.
So you have a duplicate facility, maybe sitting there gathering dust until needed (yes you can rent places but there is still an ongoing cost and it takes longer to get going), or you can use both. But now you have 2 buildings to pay for, 2 sets of IT kit to upgrade/patch (you must keep them in sync) not to mention regular DR testing.
Against this how many times as XC suffered from this outage? My reading of the thread suggests it is the first time, so that is X years of duplicated kit. So I would have expected the Management assesment being something along the lines of "it will cost far more than we would loose if it happened, and the chances are minimal" and here we are today.
On DR/BC part has worked however - the twitter feeds are working just fine, so they can tick that box (until it goes TITSUP of course).