Data Recovery RAID 5

We have developed unique solutions that can recover data on RAID 5

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Recover files RAID 5

We have unique technologies that allow us to recover data on RAID 5.

Data recovery on RAID 5 demands in-depth knowledge of system parity. Over many years we have accumulated the necessary knowledge to recover RAID 5 in any data loss scenario. Over many years we have accumulated the necessary knowledge to recover RAID 5 in any scenario of data loss.

RAID 5 is the evolution of previous RAID systems (RAID’s 0, 1, 2, 3 and 4), it combines the security of RAID 1 with RAID 0 performance, this makes the RAID 5 is one of the most used levels worldwide.

Although the RAID system is extremely safe, especially when we talk about RAID 5, it is not immune to failures that can cause data loss. In such cases, data recovery on RAID 5 will need to be done by a company that specialises in RAID 5 recovery.

There are numerous problems that can cause data loss on RAID 5, such as configuration problems, logical problems and physical problems. Each of these can cause total or partial downtime.

The most recurrent configuration problems are: Deletion or change in RAID controller settings, deletion or change of array volumes, loss of sequential order of disks.

Most common logical problems are: Deletion or corruption of data on partitions, formatting drives or partitions, overwriting information, problems booting the system, and others.

The most common physical problems are: RAID controller burnout, electronic circuitry burnout, read head burnout or breakage, disk surface damage, natural media wear, motor burnout, firmware issues, among many others.

In all these cases our specialists have acted with certain frequency, we specialize in cases of disaster recovery, the entry of RAID 5 is recurrent in our laboratory, this has developed in us an advanced knowledge about RAID 5. Today, surely, we have the expertise in data recovery on RAID 5.

A RAID 0 system is based on synchronous distribution of information among the various disks in the array. That is, the data will be written and read on all the disks at the same time.

RAID 0

A RAID 1 system is based on mirroring one disk on another disk. That is, any information that is stored on disk 1 will also be stored on disk 2.

RAID 1

A RAID 5 system is an evolution of the previous RAID types. It is designed to have the performance of RAID 0, the security of RAID 1 and the economy of disks in the redundancy process.

RAID 5

RAID 6 is an evolution of RAID 5. The main difference is that instead of allowing the loss of 1 disk, RAID 6 allows the loss of up to 2 disks at the same time.

RAID 6

A RAID 10 or 0+1 is the combination of RAID 0 and RAID 1. In this type of RAID the storage can contain numerous disks, and each disk will have another identical disk (mirror) in the same array.

RAID 10

RAID Data Recovery

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Why Digital Recovery?

Through reverse engineering and full understanding of the algorithms used in RAID controllers, we have the necessary know-how to recover data on RAID 5. Surely we are the Brazilian data recovery company more able to act in cases of data loss on RAID 5. We operate for more than 23 in the market of data recovery, we are specialists in large corporate systems, we created the unit Data Center Recovery Services, in this department we recover RAID systems (0, 1, 10, 5, 50, 6, 60, vRAID, RAID-Z and JBOD), Storages (NAS, DAS and SAN) with Host Channel iSCSI, SAS and FC (Fibre Channel) from various manufacturers such as HP / HP, Dell / EMC and IBM / Lenovo, Databases (Microsoft SQL Server, Oracle, MySQL, PostgreSQL, MariaDB, Firebird, DB2, Informix, Caché and Btrieve) and virtual machines (Microsoft Hyper-V, VMware, Citrix XenServer, Proxmox and Acrópolis). We have developed software and hardware technologies that enable us to act with precision and agility in advanced diagnostic processes and data recovery. The creation of technologies – many of which are proprietary and exclusive – has enabled Digital Recovery to remain at the forefront of RAID 5 data recovery. One of our technologies, called Tracer, is capable of delivering outstanding results in data recovery on Virtual Machines, Databases and RAID systems. Through millions of calculations and analysis of millions of records, this technology makes it possible to drastically reduce the execution time of projects, as well as increase success rates to almost 100%. We are a Brazilian company with a subsidiary in Germany. Other partnerships for the exchange of information and sharing of technologies are made between companies in countries such as the United States, Russia and Ukraine. In addition to providing services to governments, financial institutions, and small, medium, and large companies, Digital Recovery also provides services to other companies that also operate in the area of data recovery. If your data is stored on a device located outside of the countries where we have labs, we have the technology to remotely assess and recover your data. If this is your case, please consult our department 24×7. Should you need it, we can also provide you with a Non-Disclosure Agreement (NDA) in a language of your choice. Important to mention that our NDA is already adapted for GDPR. Please speak to one of our experts about this. Being fully aware of the existing levels of pressure and urgency in data centre and cloud computing environments, we also offer a 24×7 urgency service. This type of service provides our customers with the possibility of performing services 24 hours a day, 7 days a week, 365 days a year. If you have received a negative diagnosis from competitors or internal IT department, we can perform last ditch attempt of data recovery, Digital Recovery’s team of experts can work with you to reverse the data loss scenario, we are experts in RAID 5 recovery.

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Customer experiences

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Success stories

We decrypted over 1.5TB of data following an attack by LockBit 2.0 ransomware

Soon after a new wave of LockBit 2.0 ransomware attacks, many companies saw their business come to a standstill because of data locked out of encryption. Here is a case of decryption for one of them.

#France

How we saved a company from a Lockbit 2.0 ransomware attack

We received a contact from a company that said it had suffered an attack and was unable to continue its activities. When they arrived at their offices after the weekend, they realised that a large part of their data was inaccessible.

#France

Ransomware attack on one of the largest river logistics companies in Latin America

One of the largest River Logistics companies in Latin America contacted us to decrypt files after a Quantum Ransomware attack.

There has been a wave of attacks by the Quantum group targeting several different companies. Small, medium and large companies have been targeted. In this case a large Fluvial logistics company in Argentina was the victim.

#Argentina

What our clients say about us

"We had a serious problem after a power failure of a NAS server in Raid 5. I immediately contacted DIGITAL RECOVERY. After a few days of hard work the problem was solved."

"One of our raid servers had stopped. After several attempts without solving the problem we found DIGITAL RECOVERY and 5 hours later, at 4am, the data was recovered."

"We appointed DIGITAL RECOVERY in a special case (of data loss) in a raid 5 storage. Digital Recovery was able to recover 32 million files so our customer was extremely satisfied.”

"Without a doubt the best data recovery company in Latin America. The contact Digital Recovery will always be saved on my phone, because inevitably I will need again."

"The quality of the service is excellent. The attention given to customer service is gratifying and the feedback we receive reassures us that we can trust the work and dedication."

"Great company, they saved me from a big problem! I recommend, fast service, my thanks to the Digital Recovery team for the attention and quick solution to the problem! Show!"

"Second time that I count with the agility and professionalism of the Digital Recovery team, they are very experienced and agile. I recommend to all"

"They helped me recover some data that I had thought was lost. I had a great experience with the team for their calmness, agility and transparency."

Companies that trust our solutions

Answers from our experts

What are the main reasons that cause data loss on RAID 5?

The main problems that lead to data loss in RAID 5 are:

Configuration Problems:

Loss of Array data;
Deletion or Change in RAID controller settings;
Exclusion or change of Array volumes;
Loss of the sequential order of the disks;
Logical Problems:
Deletion or corruption of data on partitions;
Formatting drives or partitions;
Overwriting information;
Formatting followed by reinstallation of systems;
Problems booting the system;
Dissynchronization of data from one hard drive to another.

Physical Problems:

Burning or problems occurring in the RAID controller;
Burnout of electronic circuits;
Burnout of read heads;
Breakage of read heads;
Damage to the surface of the disks (HDD platters):
Bad Blocks – Defective Sectors;
Natural wear of the media;
Scratches and scratches surface;
Scratches and scratches serious;
Locked motor bearings;
Motor burnout;
Problems caused by falls or impacts;
Problems related to the Servo Mechanism area;
Firmware problems;
Problems with water or other liquids.

Are there any specific recommendations for servers and storage in RAID 5?

Usually when problems occur with a RAID server, a long time may have passed when the server was configured and rarely remember the details of the configurations used.

If the system type is RAID 5 (with redundant disks) and a problem occurred in only one of the disks, you can try to replace the disk with problems and perform Rebuild (procedure for reconstruction of data from the damaged disk).

To do this, contact our team of specialists. However, before performing the Rebuild procedure, it is necessary to be absolutely sure that the Array has not suffered any type of change, that is, the controller data and the order of the physical disks have not been modified. Otherwise there will be data overlapping.

How does RAID 5 parity work?

In a RAID 5 system with 4 disks:

All the information in the first block of disks 1, 2 and 3 will be stored in the first block of disk 4;
In the second block, the information of disks 2, 3 and 4 will be stored in disk 1;
In the third block, the information of discs 3, 4 and 1 will be stored in disc 2;
In the fourth block, the information of disks 4, 1 and 2 will be stored in disk 3;
In the fifth block of RAID 5 the whole cycle begins again.

In this way the parity will be stored in all the disks at the same time. If one of the disks is damaged, the information of this disk that is contained in the parities recorded on the other disks, will be used to reconstruct the data on the new disk that will be placed in place of the damaged disk. For your knowledge: When creating a RAID 5 system, the available space will be the sum of the amount of disks minus 1. Because the system will use the space of one disk to store the parity.

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How much space is available on a server or storage with RAID 5?

Regardless of the number of disks that will be allocated in the array, the system will use the space equivalent to one disk for parity, ie to get the net space, just multiply the capacity of the disks by the number of disks subtracting one.

Example | Considering 5 disks of 3 TB each, totaling 15 TB of raw space.

Subtracting one disk we have a total of 4 disks of 3 TB, ie, 3 TB x 4 = 12 TB

How to recover RAID 5?

A RAID 5 with 4 HDDs or SSDs can have over 1000 different combinations of data access. If these combinations are modified or lost, data loss will inevitably occur.

If any attempt to rebuild the data through the REBUILD process is made with an Array other than the original, overwriting will occur.

If this has already happened, we recommend to stop everything and contact our technical support. It is still possible to recover RAID 5 through specially written algorithms to rebuild the overlapped areas through data stored in the regions intended for parity (redundancy) of the RAID Array.

Is it possible to recover RAID 5 data remotely?

Yes, in many situations it is possible to recover data from a RAID server or storage remotely. For more information about this recovery modality, please contact us through our support channels, which are available 24x7x365.