RAID Recovery

RAID-configured systems offer a wide range of benefits such as safer storage and improved performance. However, despite these advantages, these systems can develop technical failures for to various reasons. When this happens, it is always advisable to look for professional RAID Data Recovery Services.

It is not easy to recover data from RAID systems. Any simple mistake during the recovery process is enough to create more damage to the remaining data, eventually losing everything that would have been recovered by a professional. This happens mostly when an individual does not have in-depth knowledge of the configuration of RAID arrays at the software, firmware and hardware levels.

There are four main reasons why RAID arrays fail: hardware, human error, software and application errors. Hardware failure is usually caused by bad sectors, fire damage, controller malfunction, disk overheat and other similar physical factors. Human error is caused by unintentional deletion of files, lost log-in details or overwritten RAID settings.

Software failures occur as a result of back up errors, computer viruses or directory corruption. Lastly, application failure can occur due to corrupted files, deleted tables or locked orinaccessable databases.

None of these problems are easy to fix especially if the individual is not an expert in complex RAID systems. Each problem comes with its own recovery procedures which need to be followed strictly. Since there is no standard recovery method for every problem, it makes this task harder than ever.

Companies that value their privacy and important data do not have to worry when their RAID systems fail as long as they hire a professional IT company that provides quality recovery services. Such a company is capable of backing up the data before launching their recovery processes which use advanced technology. Their techniques ensure that no more files are lost before or after recovery.

About RAID Data Recovery

A wide majority of small-to-medium business enterprises across the world have nowadays turned to RAID-configured systems, services for most if not all of their storage solutions. Some of the most frequently given reasons for opting to utilize RAID Arrays services in business enterprises today are the highly fault-tolerant levels that the solution offers its users and the most of all the cost effectiveness of the acquisition and maintenance of the system.

This is, however, accompanied by an anticlimax that, if for some reason a RAID Array fails as may be a result of component malfunctions (such as hard disk drives and controller cards) or even in the event of operating and application corruption, then it leaves all the data unusable and in most cases than not corrupted.

RAID data recovery is an extremely intricate task since the RAID data configurations most of the times have different forms of data layouts depending on their manufacturers, this is often for competitive purposes. Therefore, it goes without saying that without an in-depth and acute knowledge of how RAID arrays are usually configured in hardware, firmware and even software levels, the data recovery attempts will not only fail completely, but will also result in far much worse data corruption.

By putting into use its vast knowledge of RAID Array storage technology systems, some companies such as Seagate Recovery Services can reliably and successfully manage to recover data from the very earliest to the most recent SAN, NAS and Server RAID configurations available in the market today.

Guidelines for Raid Data Recovery

In the event that you have realized that you are handling a RAID failure and therefore you will need Raid Data recovery, the first step is to write down all that you know about the original configuration of the array i.e. ensure that you label all the member disks with a marker. These, along with the drive disks, also label the controller ports and all the cables. Then subsequently you can use the numbering format to refer to any particular disk. RAID recovery normally implies the recovery of logical RAID configuration that is made up of the following parameters; RAID type, number of its member disks and their order, block sizes, start, offset for data on member disks (this information is in most cases not given).

The logical RAID configuration is accessible in RAID controller BIOS or in RAID monitoring and configuration software. If you manage to determine all parameters, RAID recovery is accomplished for you. All the information relates to the preparation to RAID recovery that aims at reconstructing missing RAID configuration parameters. All of the information given above must be collected so as to enable you return to the original configuration should there be a need to.

This is basically a controller card disk which is capable of supporting one or more configurations. It was originally meant only for the SCSI drives, but the RAID Controllers just became really popular for both the SATA and PATA drives

What are RAID Controllers

It is technically a device that manages the physical disk drives, and then thereby presents them to the computer in such a form as of logical units. Yet in most cases, implements hardware, thus it is sometimes referred to as RAID controller. It also often useful in that it provides the additional disk cache. The  controller is capable of offering a level of notion between the operating system as well as the physical computer drives. The RAID controller provides groups of the various applications and the operating systems, as logical units for which the data protection schemes can then be defined. Since the controller is capable of accessing multiple copies of various data on multiple devices, it is therefore capable of improving performance and can protect data in the event that a system crash occurs.

In the Hardware-Based RAID, physical controllers is used in managing the RAID arrangement. The controller can also take various forms such as a PCI or PCI Express card that is designed to support only a specific drive format like SATA. However, some of the RAID controllers could also be integrated with motherboards. The controller may also be software-purely, thereby using the hardware resources belonging to the host system. The Software-based RAID generally gives similar functionality as to that which is hardware-based RAID, but typically less in performance than of the hardware versions.

RAID Controller Failure Causes and Remedies

RAID controller failures may occur due to a variety of reasons. Normally a technician would assume that one of the drives has failed.  It is a very common diagnosis for RAID controller failures as the diagnostic lights on the drives may be blinking, gone orange, or as may be in some cases the drive may not be spinning.  These surface indicators would definitely lead the technician to assume that the drives have either failed or are on their way out.  There is, however, another reason why all these things might occur, and that would definitely be a RAID controller failure.  The challenge is to be able to diagnose the problem with a damaged controller.

However, despite the advantages offered by the RAID arrays, there are certain disadvantages as well, e.g. should the RAID controller fail, it will become very hard or even in some cases not possible to continue making use of the RAID array in the original arrangement. In various cases, the user data and files end up becoming inaccessible with no original or a well-suited RAID controller required.

In the event that your RAID controller does fail and you need access to your data, you need to consider making use of a dedicated RAID recovery device to be able to recover data and files from the inaccessible array and putting all the recovered files onto one hard disk.