IT infrastructure company Pulsant suffered a power outage at its Maidenhead data centre last night that cut websites off from the internet. Although electricity was restored soon after by routing around a dead uninterruptible power supply, the blip knocked out web hosting firms' servers and firewalls, and issues were still on-going hours later. Bringing up systems and recovering data after a forced hard shutdown takes time so some businesses were still sorting themselves out today.
Pulsant told The Register that the problem was "a partial power disruption during scheduled maintenance to part of our Maidenhead data centre facility overnight [which] did not affect the whole site or facility".
Source: The Register