Data loss on a Network Attached Storage (NAS) can be a major problem for companies and professionals who depend on the availability and security of information. With its flexibility and centralized storage capacity, NAS has become a common resource in corporate environments.
However, even with the most secure settings, failures can occur, leading to data loss. That’s why understanding how NAS data recovery works and knowing the most common causes of these failures is fundamental to minimizing risks and being prepared to act in emergencies.
In this article, we’ll explain how the NAS data recovery process works and the main causes of data loss on this type of device. Read on to learn more about this topic!
How NAS data recovery works
NAS data recovery is a specialized process that aims to reconstruct the parameters of the RAID array lost in the event of a failure. NAS systems generally operate with RAID (Redundant Array of Independent Disks) configurations, which offer redundancy and data protection. However, hard disk problems, logical errors or controller failures can compromise access to information.
NAS data recovery involves a few essential steps:
- Advanced diagnosis: the first step is to carry out a detailed diagnosis to identify the problem. At this stage, the experts check whether the data loss was caused by logical errors, hardware failures, cyber attacks (such as ransomware) or other causes;
- Rebuilding the RAID array: if the data loss is related to RAID failures, the experts work to rebuild the array, restoring the parameters of the disk array to access the data again;
- Remote recovery: in many cases, recovery can be carried out remotely, requiring only a dedicated laptop and a good internet connection. This method is ideal for companies that need to recover data quickly and avoid major losses;
- Physical recovery: if the cause of the data loss is physical, such as damage to the hard drives, it is necessary to send the device to a specialized laboratory. There, technicians use specific tools to recover the stored data.
Common causes of data loss on NAS
NAS systems, despite their security and efficiency, are not immune to data loss. Here are the most common causes that can compromise a NAS:
1. Logical problems
Logical errors include accidentally deleting files, formatting partitions and overwriting data. In some situations, the user themselves can try to reverse the problem by backing up the system.
However, it is important to exercise caution when dealing with logical errors, as trying to solve the problem without proper knowledge can aggravate the situation, making recovery more difficult or even impossible.
2. Hardware problems
Wear and tear on NAS components is one of the main causes of data loss. Hard drives, RAID controllers, motherboards and connectors can fail after years of use. Most of these problems can be solved by replacing the faulty hardware. However, if multiple hard drives fail simultaneously in a RAID system, it may be necessary to call in a specialized data recovery service.
3. Electronic circuits burn out
Power surges and other electrical failures, although rare in data centers, can occur and damage the NAS’s electronic circuits. In RAID 5 and RAID 10 systems, if only one disk is affected, the system can continue to function in a degraded way until the disk is replaced. However, if more than one disk is damaged, it may be necessary to resort to backing up the system or to a data recovery service.
4. Ransomware attacks
Ransomware is a growing threat and is responsible for a large proportion of data losses on NAS systems. In 2020, a Check Point report indicated that 97% of companies worldwide suffered at least one malware attack.
Ransomware attacks aim to encrypt data, demanding a ransom for its release. NAS systems connected to the internet are especially vulnerable, and many recent attacks have taken advantage of security flaws discovered by hackers.
5. Human error
Incorrect settings, improper permissions and accidental deletion of files are common mistakes that can result in data loss on NAS systems. Lack of technical knowledge can make recovery more difficult, especially if the actions taken to resolve the problem end up compromising the data even further.
Digital Recovery: NAS data recovery specialist
NAS data recovery requires expertise, knowledge of RAID systems and specialized tools. Digital Recovery has over 25 years’ experience in data recovery in a variety of scenarios, including cases considered irreversible by other companies. In addition, we offer customized solutions for different NAS, DAS and SAN configurations, with 24/7 remote and emergency support.
Our experts are prepared to deal with logical problems, hardware failures, ransomware attacks and other data loss scenarios, guaranteeing the integrity and security of information throughout the process.
If you want to know more about NAS and how it works, check out our article What is NAS for detailed information.
