A Disaster Recovery Plan DRP is a business plan that describes how work can be resumed quickly and effectively after a disaster. Disaster recovery planning is just part of business continuity planning and applied to aspects of an organization that rely on an IT infrastructure to function.
History[ edit ] Disaster recovery developed in the mid- to late s as computer center managers began to recognize the dependence of their organizations on their computer systems. At that time, most systems were batch -oriented mainframes which in many cases could be down for a number of days before significant damage would be done to the organization.
As awareness of the potential business disruption that would follow an IT-related disaster, the disaster recovery industry developed to provide backup computer centers, with Sun Information Systems which later became Sungard Availability Services becoming the first major US commercial hot site vendor, established in in Sri Lanka.
During the s and 90s, customer awareness and industry both grew rapidly, driven by the advent of open systems and real-time processing which increased the dependence of organizations on their IT systems.
Regulations mandating business continuity and disaster recovery plans for organizations in various sectors of the economy, imposed by the authorities and by business partners, increased the demand and led to the availability of commercial disaster recovery services, including mobile data centers delivered to a suitable recovery location by truck.
With the rapid growth of the Internet through the late s and into the s, organizations of all sizes became further dependent on the continuous availability of their IT systems, with some organizations setting objectives of 2, 3, 4 or 5 nines Improved networking meant critical IT services could be served remotely, hence on-site recovery became less important.
The rise of cloud computing since continues that trend: The first is natural disasters such as floods, hurricanes, tornadoes or earthquakes.
While preventing a natural disaster is impossible, risk management measures such as avoiding disaster-prone situations and good planning can help. The second category is man-made disasters, such as hazardous material spills, infrastructure failure, bio-terrorism, and disastrous IT bugs or failed change implementations.
In these instances, surveillance, testing and mitigation planning are invaluable. Importance of disaster recovery planning[ edit ] Recent research supports the idea that implementing a more holistic pre-disaster planning approach is more cost-effective in the long run. As a result, preparation for continuation or recovery of systems needs to be taken very seriously.
This involves a significant investment of time and money with the aim of ensuring minimal losses in the event of a disruptive event. Different types of measures can be included in disaster recovery plan DRP. Disaster recovery planning is a subset of a larger process known as business continuity planning and includes planning for resumption of applications, data, hardware, electronic communications such as networking and other IT infrastructure.
IT disaster recovery control measures can be classified into the following three types: Preventive measures — Controls aimed at preventing an event from occurring. Detective measures — Controls aimed at detecting or discovering unwanted events. Corrective measures — Controls aimed at correcting or restoring the system after a disaster or an event.
Good disaster recovery plan measures dictate that these three types of controls be documented and exercised regularly using so-called "DR tests". The metrics specified for the business processes are then mapped to the underlying IT systems and infrastructure that support those processes.
While most business unit heads would like zero data loss and zero time loss, the cost associated with that level of protection may make the desired high availability solutions impractical. A cost-benefit analysis often dictates which disaster recovery measures are implemented.
Traditionally, a disaster recovery system involved cutover or switch-over recovery systems.
However, this strategy proved to be expensive and time-consuming. Therefore, more affordable and effective cloud-based systems were introduced. Some of the most common strategies for data protection include: These management data are configured as an xml representation called OVF Open Virtualization Formatand can be restored once a disaster occurs.
Hybrid Cloud solutions that replicate both on-site and to off-site data centers. These solutions provide the ability to instantly fail-over to local on-site hardware, but in the event of a physical disaster, servers can be brought up in the cloud data centers as well.
In addition to preparing for the need to recover systems, organizations also implement precautionary measures with the objective of preventing a disaster in the first place.Disaster recovery planning is the process of creating a document that details how your business will recover from a catastrophic event.
All businesses need a disaster recovery plan, but few businesses take the time to write a detailed and all-encompassing plan. The creation of a living business continuity plan is far from a trivial process. However, it is equally the case that the creation of a plan is often made much more difficult than is actually necessary..
Do you really need a complicated suite of software to create your plan?
You can't predict or prevent disasters. That's reality. But with The Disaster Recovery Handbook, you can create a plan to ensure your business will continue and your vital operations, facilities, and assets will be protected.
This guide to Disaster Recovery Planning is intended to be a launch pad for those seeking help with the business continuity planning process. It offers information, guidance, tips, and links to a range of resources.
Download this Disaster Recovery Plan template to describe the IT framework and procedures to be activated in the event of a disaster occurring. This DR Plan includes a 32 page MS Word template and 12 Excel spreadsheets as well as Business Impact Analysis, Damage Assessment Report .
Hurricane Sandy left thousands of unprepared business owners in the Northeast without power, phone service, the Internet and access to bank accounts and other necessities. It was a stark reminder.