“Disaster Recovery-as-a-Service (DRaaS) was an inevitable development. 20 years ago, IT budgeting might have been able to encompass the building of mirror data centers for DR purposes: just take your existing data center and build an exact replica in another city or state and Viola! Your DR needs are cared for.
Such concepts were technically sound, but few could afford them. Larger operations tried to reduce costs by using their own regional data centers as failover sites. Each data center was replicated elsewhere so that if one went down, the others could cope. But again, this one only appealed to those with deep pockets. Others figured out some kind of DR plan using colocation services or simply made a few tape copies and shipped them off to Iron Mountain.”