Quantum DLT 2000 Handbook page 115

Today, new disaster recovery schemes are emerging that place
greater importance on keeping a backup database up-to-date at all
times. For instance, electronic vaulting in the form of data mirror-
ing or shadowing reduces the recovery time for mission critical
applications. Shadowing and mirroring maintains an exact copy of
the primary database at a remote site.
We've classified high end disaster recovery systems like this among ver-
tical applications for DLTtape systems because these drives are often
dedicated to this function and are not supporting routine file recovery
tasks. An example of this advanced type of disaster recovery set-up can
be found at KPMG, world-renowned professional services firm.
At KPMG's London operation, the company had a unique situa-
tion in which it needed to establish a parallel data center across the
Thames river in order to avoid shutdowns in the city due to bomb
threats, fires, or other emergencies. KPMG selected DLTtape sys-
tem-based libraries to eliminate the risk of data loss due to tape or
drive failures, and for the technology's speed and capacity.
The company established a 100 megabits per second fiber optic
link between its London offices and its backup site across the river.
Now, should the city be sealed off during an emergency, the com-
pany can resume operation across the river almost immediately
using its DLTtape library systems.
KPMG's conversion from 4mm DAT backup to DLTtape libraries has
also saved the company's network administrators 31 hours per week
on backup administration. In addition, file restores, which used to
take half a day or more, can now be accomplished in minutes.
QUANTUM DLTtape HANDBOOK 10.11