Backup is a widely known term, but still surrounded by misinterpretations. Many companies believe they are protected when, in practice, they only rely on automatic synchronizations or one-off backups that do not guarantee real recovery in case of incidents.

In a scenario where ransomware attacks and operational failures can disrupt entire operations, backup strategies have ceased to be merely a preventative measure and have become a central element of business continuity.

In the corporate world, data is created, modified, and accessed all the time. Emails, documents, databases, and entire systems depend on constant availability. When this information is lost, whether due to human error, technical failure, or a cyberattack, the impact goes far beyond the IT department.

In this article, we explain What is backup?, how it works in practice and why does he need to be treated as part of the business continuity strategy.

What exactly is a backup?

Backup is the creation of independent copies of the data, stored in a location different from the original environment, with the goal of allowing information to be recovered in case of loss, corruption, or unavailability.

Unlike simple synchronization or mirroring, backup preserves historical versions and allows you to restore data from a specific point in time. This makes all the difference when the problem is not immediate, such as in cases of accidental deletions or attacks that spread silently.

How does backup work in practice?

In practice, backups follow a relatively simple flow, but one that needs to be well-planned to work when truly needed.

The process involves:

  • Defining the scope based on criticality and business impact.

The first step is to identify which systems, applications, and data are essential for the company's operation. Not all information has the same level of criticality, so it is necessary to map what needs the most protection and priority for recovery.

  • Definition of frequency guided by RPO (Recovery Point Objective)

RPO defines the maximum amount of data a company can lose without compromising operations. Based on this indicator, the frequency of backups is established, which can vary from daily to continuous, depending on the volume of transactions and the criticality of the information.

  • Retention aligned with risk, audit, and legal requirements.

Data retention policies determine how long data should be stored. This period needs to consider regulatory requirements, audits, internal policies, and historical recovery needs, always documented in a formal backup policy.

  • Restoration tested, with measured time and aligned with the business's RTO (Recovery Time Objective).

Simply making backups of data is not enough; it is essential to regularly test the restoration processes to ensure that files can be recovered within the timeframe expected by the company's operations.

These copies can be made daily, several times a day, or according to the criticality of the information. The central point is to ensure that the backup is... regardless of the original environment and that it can be restored without relying on improvisation.

Why is simply "having backups" not enough?

This is one of the most common mistakes. Many companies even have some kind of backup, but they have never tested restoring it or don't know how long it would take to recover the data.

The report Veeam Data Protection Trends, points out that 74% of companies have already suffered some type of data loss., often discovering flaws in backup processes only at the time of restoration.

This scenario becomes even more relevant when one observes that IBM Cost of a Data Breachwhich indicates that the average time to identify and contain an incident exceeds 200 days.This makes older backup versions even more relevant for recovery.

Therefore, without testing and policy, backup becomes a feeling of security. With testing and governance, it becomes predictability.

What types of backups are there?

There are different approaches, and the choice depends on the type of data, the volume, and the expected recovery time. Different types of backup exist to meet specific storage, performance, and recovery needs.

Full backup

It copies all selected data, ensuring easier restoration, but requires more time and storage space.

It is suitable for periodic baseline routines, such as weekly or monthly backups, which will serve as a reference for other types of backups.

Incremental backup

It only copies what has changed since the last backup, reducing storage space and execution time, making it ideal for environments with large volumes of data or frequent changes.

Restoration may require the entire chain of incremental backups.

Differential backup

It copies everything that has changed since the last full backup, balancing speed of execution and simplicity of recovery.

It is suitable for operations that need to restore data quickly without relying on numerous backup files.

Cloud backup

Off-site storage, with encryption and, when necessary, immutable copies to reduce the risk of ransomware.

It is recommended for business continuity and disaster recovery strategies, ensuring secure backups even in the event of incidents in the primary environment.

The choice between these types of backup, or a combination of them, depends on the company's operational needs and the recovery objectives defined for the environment.

Is backup the same as high availability?

No, and this confusion is dangerous.

Many companies believe that because they have highly available systems, their data is already protected. However, High availability (HA) It keeps systems operating even in the event of failures, through redundancy and automatic replication.

Already backup Its purpose is to preserve copies of data for recovery after loss, accidental deletion, or cyberattacks.

One does not replace the other. Even highly available environments remain vulnerable to accidental deletions, operational failures, or cyberattacks, scenarios in which only backup allows data recovery.

What is the role of backups in protecting against cyberattacks?

Attacks like ransomware continue to be a major driver for more mature backup strategies. In this type of attack, criminals invade a company's environment, encrypt files and systems, and demand a ransom payment to release access to the data.

The report Data Breach Investigations Report Published annually by Verizon, the study shows that ransomware remains among the most frequent security incidents in organizations and continues to be a major cause of business interruption and loss of access to corporate data. The study also points out that many attacks exploit compromised credentials, misconfigurations, or known vulnerabilities in exposed systems.

In this scenario, backup plays an essential role in digital resilience strategy. Without secure and isolated copies of data, the company can be held hostage by the incident and pressured to pay the ransom. Organizations that maintain a mature backup and recovery strategy, on the other hand, are able to restore critical information and resume operations with greater control and predictability.

How can you tell if the backup system meets the realities of the operation?

Assessing whether backups truly meet a company's needs requires analyzing several practical aspects of the operation. Simply making copies of data isn't enough; it's essential to ensure that these copies can be recovered quickly and securely when necessary.

Some questions can help to quickly assess the maturity of the strategy:

  • Can we restore specific data or only entire environments?
  • Do we know how long a full recovery would take?
  • Are backups stored outside the main environment?
  • Has the restoration been tested recently?

Assessing these aspects is an important step in identifying potential weaknesses in the backup strategy and strengthening the company's recovery capabilities in the face of incidents.

Rely on experts to strengthen your strategy.

for over 22 yearsWe work with IT infrastructure, digital security, connectivity, and data centers, supporting companies that depend on available and recoverable data to maintain their operations.

We work with backup strategies tailored to the specific needs of each environment, integrating protection, monitoring, and recovery.

If you want to assess whether your company's backup system works in practice, talk to our experts.

We will analyze your situation and guide you through the next steps clearly.