Redundancy, redundancy, redundancy...
and again I say, redundancy.
Yes, it's costly at the level of components, systems, networks, and data centers.
But look at what the costs will be now for this 3-hour outage:
1. SLA penalties,
2. loss of goodwill, and
3. Customers and partners now demanding much higher investment in facilities
4. Loss of business from customers who just decide not to even approach Barclays
Biting the hand that feeds IT
