There are some disadvantages however, and these mainly relate to security. Many cloud computing companies are beginning to introduce heavier forms of authentication, after research conducted for a summit revealed that many people use mobile phones to access online databases. Now: If an employee loses their handset while logged into a database with sensitive financial data and other information, what would happen if this fell into the wrong hands?
The other drawback is the fear of data loss. This is why many managed hosting companies, who provide the infrastructure for online databases to be stored, have a primary and a secondary data centre. Although the online databases will be accessed from the primary location, if there was a power failure or data loss here then the secondary data centre 100 miles away could minimize disruption allowing for reliability.