RAID Data Recovery

Dedicated department that can work 24 hours exclusively for data recovery on RAID systems.

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Recover-RAID

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Recover RAID

We've been innovating in data recovery for over two decades

Recovering RAID is a process performed with the purpose of recovering information that was lost or became inaccessible in RAID systems and Storages.

Unfortunately in technology things do not always work as planned and even with all the apparatus, data loss can happen.

Digital Recovery has been working tirelessly since mid-2003 on the development of advanced technologies to recover RAID of the most varied types, with any volume and whatever the operating system and its partition system.

We are one of the first companies in the world to completely master this technology. Even in critical situations where you have two or more disks with physical problems, in cases of virtualized environments with virtual machines deleted, corrupted or attacked by ransomware, we have the necessary expertise and technology to help with the data recovery project.

RAID Types

Have You Received a Negative Diagnosis?

If your project had a negative diagnosis or the execution time does not meet your expectations, we accept the challenge of analysing your case.

Why Choose Digital Recovery to Recover RAID?

Digital Recovery is a company specialized in recovering RAID of all levels. We created a dedicated division to exclusively serve highly complex environments.

This business unit is known as Data Centre Recovery Services and is specialized in recovering data from RAID (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 the most varied manufacturers such as HP/HPE, 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 Acropolis).

Even if you have received a negative diagnosis from a data recovery company, we are still fully available to analyze your case.

We develop software and hardware technologies that enable us to act with precision and agility in advanced diagnosis and data recovery processes. The creation of these technologies – numerous of them for exclusive and proprietary use – made Digital Recovery always remain at the forefront.

One of our technologies, called Tracer, is capable of generating differentiated results in data recovery for Virtual Machines, Databases and RAID Systems. Through millions of calculations and analysis of millions of records, this technology makes it possible to drastically reduce project execution time, as well as increase success rates to almost 100%.

We are a German company with branches all over the world. Other partnerships for exchanging information and sharing technologies are carried out between companies that are 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 are also active in the data recovery area.

If your data is stored on a device located outside the countries where we have laboratories, we have the technology that allows us to remotely assess and recover your data. If this is your case, please contact our department 24×7.

If you need it, we can also provide you with a Non-Disclosure Agreement (NDA) in a language of your choice. It is important to mention that our NDA is already adapted for the GDPR. Please discuss this with one of our experts.

Being fully aware of the pressure and urgency levels that exist in Data Centres and Cloud Computing environments, we also offer a 24×7 emergency service. This type of service provides our customers with the possibility of providing services 24 hours a day, 7 days a week, 365 days a year.

Free diagnosis

Free advanced diagnosis, with results within 24 working hours. Data Center subject to change.

Data Confidentiality

We use a non-disclosure agreement (NDA) as the most professional way to guarantee description, seriousness and loyalty.

Online Tracking

You will receive real-time feedback during the entire process of performing the contracted services.

Remote Recovery

For those who need agility and practicality, as it is not necessary to send the media and pay for shipping.

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Data List and Double-Check

We release a 100% secure environment for the recovered data to be listed and effectively carry out a cheque with your IT department.

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Multidisciplinary Team

Specialised data recovery engineers and technicians who are prepared to deal with all types of environments and hardware.

Let Us Show You It's Possible!

There is still hope for your lost data, our entire team is at your company's disposal.

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Frequently Asked Questions About RAID Recovery

The acronym RAID stands for Redundant Arrays of Independent Disks. This is a technology developed to increase performance, security and storage capacity in environments involving On Premise servers and storages, Data Centres and Cloud Infrastructure. The technology in question began to be developed by researchers at the University of Berkeley (California-USA) in the mid-1980s. This technology is based on the synchronization of multiple disks, whether SATA, SSHD, Nearline, SAS and FC [Fibre Channel] , to form one or more logical disks viewed by both the RAID controller and the operating system chosen to use the logical volume. The implementation of RAID systems combined with system virtualization, scalable storages containing differentiated technologies such as All Flash Storage and a high-speed internet enabled the creation of IT departments On Premise, Data Centres and the so-called Cloud Computing, where they are located business-critical applications, such as large ERPs such as SAP. There are several types of RAID and the most used respectively are RAID 5, RAID 1, RAID 10, RAID 6 and RAID 0.

Yes! In the vast majority of cases! It is perfectly possible to recover data in a complete and structured way. Digital Recovery is a company specialized in data recovery in all types of RAID systems, regardless of the operating system and hardware. It doesn’t matter the size of your company or how complex the structure of your servers and storage is. Our professionals, with international experience, will be able to solve your problem masterfully. For your peace of mind, confidence and security, we suggest viewing our updated list of customers, testimonials and technical qualification certificates provided by agencies that have already been successfully assisted in projects involving RAID systems.

The most common situations that cause data to be inaccessible and/or lost on RAID are:

  • Physical damage to the RAID controller
  • Physical damage to the server’s system board
  • Improper changes to RAID controller settings
  • Problems found on one or more disks at the same time
  • Operating System Boot Problems
  • Loss of sequential order of discs
  • Data corruption in GPT or MBR type partitions
  • Problems with Rebuild Attempts from One or More Disks with Problems
  • Improper rebuilding of both the RAID and the logical volume pegged to the array
  • Problems presented during an increase capacity process
  • RAID was rebuilt or reset with a different configuration.

The structure of RAID systems is based on three major differences. (1) Security (2) Performance and (3) Increased capacity of devices dedicated to data storage. A RAID controller is hardware specifically designed for processing information about the volumes and partitions of an Array. The controller board has, among others, two main functions: The first one is to perform all the calculations related to data processing and storage of parity information in the arrays. The second function is to store the configuration data of Arrays created and managed by the controller itself. A common technique used by controllers to protect themselves from problems is to store the data from the managed arrays in reserved areas on the very disks they use to create the arrays. Thus, if a controller experiences problems, a new controller can be installed and then execute the commands necessary to read the configuration data stored on the array’s disks, preventing data loss from occurring. This region of the disk is commonly known as DACStore. If, in fact, the problem is in the controller, due to the protections previously reported, it is very likely that the environment will return to working normally. However, if there is any problem with the information recorded on the disks, the data will remain inaccessible.

We fully understand the inconvenience and damage that the disruption of a server and RAID storage can cause your business. With that in mind, we created a department that operates 24 hours a day, totally focused on serving customers who have extreme urgency in recovering data on RAID systems.

Once disks from a server or RAID array enter our lab, the advanced diagnostics process begins immediately. The advanced diagnostic process typically takes between 4 and 8 hours. As soon as it is completed, the customer will be informed about the possibilities of data recovery, a quote, as well as the estimated time for recovery.

The average time for data recovery on servers and RAID arrays with Digital Recovery is approximately 36 hours, but in some cases, projects have already been solved in less than 12 hours. Depending on the complexity of the problem and the type of solution to be adopted, the time for data recovery may be extended by a few days, however, at all times, an expert will be in contact with the customer’s focal point to report in a proper manner all the movements performed.

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

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

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

It is certainly possible, as there are techniques available to reverse this type of scenario, since in most projects, we can safely change the disk status from defunct to online, in order to clone the linked sectors as quickly as possible to that problematic disk.

A Degraded RAID is when one or more redundancy disks have stopped working. Depending on the Array type this will result in performance loss. The safest way to know if RAID is degraded is to access the controller’s management software. On IBM/Lenovo servers this software is called MegaRAID Storage Manager. Another way to visualize is also to observe if there is any orange LED lit on the disks belonging to the array in question.

The first thing to do is to contact your server or storage manufacturer or technical support. They will guide the diagnosis in the best way possible, because through the collected logs, it will be possible to create a coherent and assertive action plan. If it is not possible to restore the environment either via the manufacturer or via the restore from the most up-to-date backup, we can help you to solve this challenge in the best possible way.

Due to the many variables involved in a data recovery project in a RAID environment, it is not possible to know the final value without carrying out a detailed diagnosis. The purpose of this assessment is to determine:

  • Level of complexity and urgency
  • Real chance of recovery
  • Time to perform the service

To make a diagnosis, please contact us through our service channels, which are available 24x7x365.

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

LVM is the Logical Volume Manager, it can be fully recovered, as it is an option to manage logical volumes of a hard disk or RAID in Linux/Unix operating environments.

We have compiled a list based on several years of experience working with data recovery on RAID systems. Before performing any steps to try to recover data from your RAID system internally, pay attention to these considerations:

  • Be assured that the procedures to be performed will not make the situation worse than it already is.
  • In most cases, attempts made by technicians not specialised in RAID systems further complicate the data recovery process. Fatally, some of these attempts could make the data recovery process impossible.
  • Make sure Backup is up to date. If you don’t have backup, before performing any procedure, the best thing to do is to seek specialised help.
  • Beware of Rebuild procedure.

Never run the Initialise command. This seemingly harmless command will completely reset all existing data on the RAID, thus making data recovery completely impossible.

A RAID 1 system is a type of RAID with 100% redundancy. This means that all information on one disk is mirrored or written to another disk. Even using two disks, only one volume equivalent to one disk will be presented to the operating system. Whenever the user makes any change to the volume, the system responsible for managing RAID 1 (whether by software or hardware) will automatically replicate this change on both disks. Since I have 2 mirrored disks and exactly the same what are the possibilities of data loss? Although there is a possibility of simultaneous failure of the 2 disks, this possibility is very rare. The majority of RAID 1 data loss we receive for recovery comes from RAID management failures. See the following situations:

  1.  After 2 years of continuous use of a RAID 1, one of the disks fails with bad block issues. Because this disk is no longer in normal use, the controller or array management software will discard any attempts to write or read to this disk. The system will also warn the user about the problem so that he can quickly replace the failed disk. This is exactly where most of the problems occur. Because the system continues to work normally, as one of the disks is still 100% functional, the user ends up not paying attention to the warning and continues using the machine. Six months later the second disk fails. But this time instead of only showing failures caused by bad blocks the RAID disk is completely inaccessible. When trying to solve the problem by connecting the disks to another computer or sending for technical assistance, the only disk that will still be accessible will be the disk that stopped first (6 months ago), because even with bad blocks it may still be possible to access some information , however, from 6 months ago.
  2. Because most RAID 1s are mounted on common machines and without the infrastructure (Enclosure and RAID Controller) required for RAID systems, they are much more susceptible to failure. Because of this, another problem can happen when one of the disks has problems with the cable or connection with the motherboard. Although the disks are without any problem, a bad contact in the connection cable of one of them interrupts the communication. The Array management system issues warnings to the user, but he doesn’t notice. As there is 100% redundancy of data on another disk, the machine will continue to work normally and without performance problems. Some time later, when performing maintenance on the computer, the cables are disconnected and rearranged. This maintenance runs the risk of reconnecting the hard drives to different ports and confusing the system. Once two disks are connected in RAID 1 again the system will identify that they are not the same as it has been a long time since one of them was disconnected from RAID. At this point the system will update the information from one disk to the other. As the disks have been plugged into different ports, the system can simply copy the disk with old information about the disk with new information.
  3. Following the same line of problems mentioned above, when one of the RAID 1 disks fails and the user continues to use the system, there is a possibility of data loss if for some reason the user recreates the array. By doing this, the system will identify that the contents of the discs are not exactly the same. At this point, the system will copy the information from the first disk to the second one, which may result in data overwriting.

In some cases yes. Especially when you have an environment with few disks and when you remember exactly the array settings. However, when you have storages with numerous hard disks, running with several volumes, using different RAID configurations and even with Hot Spare disks, even if all this is documented, it will not be an easy task to recreate the Array and make it work again. In the case of Virtualized RAIDs or vRAIDs, even with all the configurations noted, the only possibility to return the Array is by reading the configurations contained in the disks (DAC Store).

As we know that disk failure can dramatically impact both the availability and integrity of strategic data for companies, 24×7 monitoring of disk health is extremely important as it allows the suspect disk to be replaced before it actually fails. The RAID controller’s own management software can be used for this type of predictive monitoring.

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