An explosion at a fireworks warehouse in May that killed 18 people forced the Grolsch brewery to activate its disaster recovery plan.
The company called in a mobile business recovery unit with servers and an electricity generator after the explosion in Enschede, the Netherlands.
The blast, which injured 940 people, shattered windows at the Grolsch offices, showering glass over desktops and rendering the building unsafe.
A spokesperson for Synstar, which provided business continuity services for Grolsch's Dutch IT supplier, said, "Everyone was banned from the building with the exception of members of staff who doubled as part of the local fire brigade.
"They were only allowed in briefly to get the back-up tapes which were kept behind the reception at the building's entrance."
Synstar set up a temporary server farm in the canteen of another Grolsch site.
The explosion happened on a Saturday, but critical systems were up and running on Monday, with full service restored by the end of the week.