How to prepare a disaster recovery plan

The moment a company loses access to files, the accounting system stops working, or email is unavailable, the question is no longer theoretical. That is when it becomes clear how to prepare a disaster recovery plan so that it actually protects revenue, customer service, and day-to-day operations, rather than merely looking correct in an audit.

For many managers, a disaster recovery plan is still associated with a technical document prepared by IT specialists and stored in a folder. In practice, it is a management tool. It determines which systems are critical, how long the company can afford downtime, in what order services must be restored, and who makes decisions under pressure. That is precisely why a good plan is not only about servers and backups. It is about the company’s ability to keep operating when something goes wrong.

Why a disaster recovery plan often fails in reality

The biggest mistake is not the absence of a plan. The biggest mistake is a plan based on assumptions rather than the company’s actual operations. A document may state that data is backed up every day, but no one has checked how quickly it can be restored. An incident manager may be defined, but they are on vacation and no substitute has been designated.

Another common problem is an overly technical perspective. If the plan does not include business priorities, it will restore the wrong things in the wrong order. For example, restoring a file server may be less urgent than ERP, a warehouse system, or a remote access environment. Without this prioritization, the company loses time precisely when it is the most expensive resource.

How to prepare a disaster recovery plan for the company’s needs

The smartest starting point is not a list of technologies, but a business impact assessment. Management, together with IT, must understand which functions cannot be interrupted and for how long. For a manufacturing company, access to orders and equipment data may be critical. For a service company, email, document management, CRM, and financial systems may be critical. This stage determines exactly what must be saved in the first hours after an incident.

Next, two key metrics should be defined - the allowable downtime and the allowable data loss. In other words, how quickly the system must return to operation and how old the data may still be acceptable. If the company says accounting can be down for one day, but the customer order system only for one hour, the backup and recovery model must reflect that. In one case, slower restoration will be sufficient; in the other, higher availability solutions will be needed.

After that, a dependency map should be created. Many systems are not autonomous. Email may rely on identity management, ERP - on a database, remote work - on VPN, firewalls, and the internet connection. If only one component is restored while other dependencies are ignored, the system may technically be turned on, but it will still be unusable for the business.

What must be included in the plan

A disaster recovery plan does not need to be bulky, but it must be usable. It should clearly define incident scenarios. Not only a complete server room failure, but also ransomware, a faulty update, cloud service unavailability, human error, or an internet service outage. Not all scenarios require the same response.

The section on roles and responsibilities is important. Who activates the plan, who makes business decisions, who communicates with customers, who coordinates vendors, and who performs the technical recovery. In a crisis, people must not improvise about whom to call and who is allowed to approve the next steps.

The plan must also include the exact sequence for restoring systems. This is where one of the most important nuances comes in - you do not always need to restore everything. Sometimes it is enough to bring back the most critical functions first with a temporary solution and restore the full environment later. This reduces downtime, but it requires a pre-developed logic rather than spontaneous decisions.

Contact information, access storage, and external vendors must not be forgotten. If passwords, licenses, administrative access, or support contacts exist only in one inaccessible system, the plan itself becomes impossible to execute. A practical approach requires this information to be kept securely, but also accessible outside the primary environment.

Backups are not the same as a recovery plan

This distinction is still often confused in companies. Backups are necessary, but by themselves they do not guarantee operational recovery. If backups are created but no one knows in what order to restore systems, how to verify data integrity, and how long it will take, the company does not have a disaster recovery plan. It only has the hope that backups will help.

There is also an important trade-off between cost and availability. Not every company needs a secondary data center or near-instant failover to a backup environment. But almost every company needs a tested, realistically usable recovery process. For a small or medium-sized business, a simple, regularly tested approach is often better than an expensive architecture that no one has tried under stress.

Testing is where the plan becomes reality

If the plan has not been tested, it is not ready. It is only a set of assumptions. Testing does not necessarily have to mean a full disaster scenario in the production environment. It can start with tabletop exercises, in which management and responsible specialists walk through a specific incident and check whether the decision chain is clear.

The next level is a technical recovery test. It is tested whether specific systems can really be restored from backups, whether databases are usable, whether users can log in, and whether critical integrations work. This is usually where outdated instructions, incorrect access, and overly optimistic time assumptions are revealed.

The frequency of testing depends on the pace of environmental change. If the company actively introduces new cloud services, migrates systems, or changes processes, the plan should be updated more often. If the environment is more stable, regular periodic tests and reviews after significant changes are sufficient.

Management’s role in preparing a disaster recovery plan

Disaster recovery is not only an IT responsibility. Management must define the acceptable risk, the available budget, and the priority business functions. Without these decisions, the IT team cannot make the right architectural and recovery decisions. Technology can only perform the task that the business has clearly defined.

It is precisely at management level that the uncomfortable questions must be answered. Does the company accept several hours of downtime? Can critical employees work remotely during an outage? Must customers receive a notification in the first hour? Are vendors included in the incident chain? These are not technical details. They are business continuity decisions with a direct impact on reputation and revenue.

In many cases, it is valuable to involve an external partner who evaluates the plan from the outside. Not because the internal team is weak, but because in everyday operations it is easy to overlook dependencies and assumptions. The KSK IT type of approach here is practical - not to create a formal document for the sake of the document, but to align the technical implementation with management requirements, audit needs, and real recovery capability.

The most common signs that a plan is outdated

If the company has switched to a new ERP in the last year, introduced Microsoft 365, moved part of its systems to the cloud, opened a new office, or changed its external IT service provider, the old plan is most likely no longer sufficient. The same applies to situations where responsible employees or security requirements have changed.

An outdated plan is usually recognized by one symptom - it looks neat, but no one is sure whether it still matches reality. If there is no clear answer to how quickly a specific system will be restored and who exactly will do it, the plan needs to be reopened.

A good disaster recovery plan does not create the illusion that a crisis will be simple. It creates clarity about what will happen in the first minutes, the first hours, and the first day. For companies that want to grow steadily, that is completely enough as a starting point - not to wait for the perfect moment, but to make practical decisions before they become urgent.