The most common causes of data loss are hardware failure, human error and natural calamities. Although the probability is small, the only way to recover from data loss due to a natural disaster is to store backup data in a physically separate location. File system corruption can frequently be repaired by the system administrator with proper software tools. Deleted files in most occasions can be successfully recovered. Data loss due to hardware failure can never be foreseen and forestalled. There are commercial services that attempt to recover data from physically damaged media, but there is no guarantee of a successful recovery and the cost incurred is prohibitively high. The cost of a data loss event is directly proportional to the value of the data and the length of time of unavailability when required, and results in financial loss, tarnished business image and in an extreme case dissolution of the business activity. Businesses nowadays have to protect data at all costs.

Successful recovery from a data loss event requires an effective backup strategy. It primarily depends on the type of the business segment. Your backup needs may range from simple data backup to server backup with virtualization. Whatever may be the requirement, hosted disaster recovery services are available which are specifically tailored to meet it.

Hosted disaster recovery services in the form of online data backup provides advanced data protection, combining data backup and offsite storage into a single automated process. With online backup, data is instantly offsite with no additional infrastructure outlay or extra hardware costs. For more aggressive disaster recovery plans, such as critical file system and database backup, continuous data protection (CDP) is available.

Enterprise-level disaster recovery solutions often require server virtualization as a prime option. Virtualization increases the efficiency and the effectiveness of the disaster recovery process with savings in cost. An online disaster recovery service which hosts server virtualization can temporarily take over the job of the client’s production servers till such time that these are back in action, thereby almost eliminating any appreciable downtime. Choosing a disaster recovery service provider that provides virtualization will allow an organization to create cost and energy efficient IT environments.

Hosted disaster recovery services either charge per GB of data, per GB of storage or per device of storage. Usually, no charge for the online backup software (which comes free and forms the essence of the SaaS model) is levied. Charges are on basis of the monthly/annual subscription cost of using the service.