RAID solutions are widely adopted by companies to ensure availability, redundancy, and performance in data storage. However, even robust configurations such as RAID 5 or RAID 10 are not immune to cyberattacks.
In an increasingly common scenario, ransomware groups infiltrate systems, encrypt the data on RAID volumes, and demand millions in ransom to restore access. This raises a critical question for IT managers: is it possible to recover a RAID encrypted by ransomware without paying the ransom?
In this article, you’ll understand the real risks of this type of attack, the technical challenges involved in the recovery of RAIDs encrypted by ransomware, and how Digital Recovery operates in extreme cases where even backups have been compromised.
Ransomware attacks on RAID: direct impact on the data structure
Unlike traditional physical or logical failures, ransomware affects the entire logical RAID volume simultaneously. This means that even if the drives are physically intact, the stored data structure is encrypted at the volume level, preventing any functional reading or reconstruction through conventional methods
The main impacts of a ransomware attack on RAID include:
- Encryption of the entire volume, including parity (RAID 5/6) or mirroring (RAID 10).
- Simultaneous compromise of all active drives, rendering any redundancy useless.
- Impossibility of restoring from snapshots, if they are located in the same array or accessible to the attacker.
- Risk of data overwriting during rebuild attempts, which may occur automatically depending on the controller.
Even robust configurations like RAID 10 with mirroring cannot withstand coordinated attacks, since ransomware actions are not selective — all mounted and visible volumes are encrypted with the same key.
Additionally, criminals often delete or encrypt log files and RAID controller configurations as well, further complicating any attempt at a traditional array reconstruction.
Why RAID recovery after encryption requires advanced expertise
Data recovery from RAID arrays encrypted by ransomware is one of the most complex tasks in the field of data engineering. This is because it involves multiple layers of difficulty:
1. Reconstructing the RAID topology without system access
In many cases, ransomware compromises the controller’s configuration files, making it difficult to identify the disk order, RAID type, offsets, blocks, and parity algorithms. Without this information, it’s impossible to even rebuild the volume.
2. Encryption applied at both logical and physical levels
Encryption can be applied at different layers:
- At the file system level (NTFS, EXT4, etc.).
- Or directly at the block level, rendering the raw sector data on the drives unreadable.
3. Distributed data fragmentation
By definition, RAID distributes data across multiple drives. This means that encryption also affects the data in a fragmented and distributed manner, making recovery through standard techniques (such as from a single disk) completely unfeasible.
4. Absence of backups or compromised backups
Modern attacks often target backups as well, which are stored on mounted or accessible volumes. When this happens, recovery becomes the last line of defense.
For this reason, the simple use of generic recovery tools does not apply. Reverse engineering, manual RAID reconstruction, and in many cases, the development of custom solutions are required to identify patterns specific to the ransomware variant used.
Company specialized in data recovery
Digital Recovery has developed exclusive processes to handle critical cases of RAID volume encryption caused by ransomware, even in the absence of backups or in cases of complete system failure.
Our approach combines reverse engineering of the RAID structure with the application of proprietary technologies such as Tracer, enabling direct reading of the encrypted blocks, reconstruction of the original RAID topology, and the creation of simulated environments to recover the data.
Our main steps include:
- Binary analysis of the disk contents, identifying encryption patterns and parity structure.
- Logical reconstruction of the RAID array, even without the controller’s original metadata.
- Segmentation and processing of the encrypted files, searching for viable decoding patterns.
- Use of exclusive tools for partial recovery and integrity validation of restored files.
- Isolated and secure environments to prevent any new risk of contamination or ransomware propagation.
This methodology allows data to be partially or fully recovered even in situations where the RAID has been completely encrypted and the system is inoperative — ensuring confidentiality, technical precision, and continuous support from specialized engineers.
In addition, our work is carried out under a non-disclosure agreement (NDA) and follows data protection regulations, ensuring legal compliance for companies operating worldwide.
Yes, it is possible to recover RAIDs encrypted by ransomware
RAIDs are resilient structures, but they were not designed to withstand sophisticated cyberattacks. When ransomware encrypts a RAID volume, it affects the entire structure simultaneously, neutralizing any redundancy advantage and making data access through conventional methods impossible.
That’s why, beyond automated tools, deep expertise in file systems, reverse engineering, RAID logic, and contaminated environment reconstruction techniques is essential. This is exactly where Digital Recovery stands out.
With global operations, proprietary technology, and a proven track record in extreme cases, we are able to recover data from RAIDs encrypted by ransomware — even when all seemed lost.
If your company is facing a critical situation, don’t make hasty decisions or rely solely on generic solutions. Speak with a specialist and find out what is technically possible in your case.
