Finally, a bit of actual detail from Mr Cruz. I took the liberty of transcribing relevant bits, hear it at
(starts about 12m in) http://www.bbc.co.uk/programmes/b08rp2xd
A: "On Sat morning, We had a power surge in one of our DCs which
affected the networking hardware, that stopped messaging --
millions and millions of messages that come between all the
different systems and applications within the BA network. It
affected ALL the operations systems - baggage, operations,
passenger processing, etc. We will make a full investigation... "
Q: "I'm not an IT expert but I've spoken to a lot of people who are,
some of them connected to your company,. and they are staggered,
frankly and that's the word I'd use, that there isn't some kind of
backup that just kicks in when you have power problems. If there
IS a backup system, why didn't it work? Because these are experts
- professionals -- they cannot /believe/ you've had a problem
going over several *days*."
A: "Well, the actual problem only lasted a few minutes. So there WAS a
power surge, there WAS a backup system, which DID not work, at
that particular point in time. It was restored after a few hours
in terms of some hardware changes, but eventually it took a long
time for messsaging, and for systems to come up again as the
operation was picking up again. We will find out exactly WHY the
backup systems did not trigger at the right time,and we will make
sure it doesn't happen again."