No matter the importance of RAID, data loss is always possible. With the right solution in place, however, it may be possible to recover lost information. Obtain the Best information about Data Recovery RAID.
Recovering RAID data requires both physical and logical processes. This article will detail how to recover a degraded raid array by exploring various recovery strategies, such as how to assess its nature of failure, utilizing software solutions for logical failures, and consulting professionals for physical damages.
Damaged or Corrupted Disks
If a RAID disk fails, its failure could cause all other drives in the array to become out-of-sync, potentially leading to data loss without backup. If this is the case for your organization, however, sending all drives in question for recovery by specialists might be your only recourse.
ACE Data Recovery has the experience and skills needed to efficiently recover critical files from failed RAID arrays. Our extensive suite of tools allows us to reconstruct file systems and extract your data efficiently.
The first step of data recovery: Understanding why and how data was lost by asking several pertinent questions regarding its loss event and receiving responses that will allow our engineers to assess recovery efforts and plan the next steps accordingly.
Human error is one of the primary sources of data loss from NAS and RAID arrays, whether reformatting, reinstalling, or overwriting volumes. Unfortunately, such errors cannot always be avoided through fault tolerance of RAID systems; but our expert team has you covered! Even the most catastrophic mistakes can be managed successfully by us.
Natural disasters can quickly wipe out RAID arrays. Fire, water, and dirt damage all need special facilities to repair. Our engineers have experience using state-of-the-art equipment in cleanroom environments to repair them as soon as they occur.
Once data has been recovered and rebuilt, it must be tested to ensure its functionality. This step is especially crucial in RAID levels that utilize data striping and parity information distribution; our technicians will evaluate each drive in the array to ensure it contains usable information before continuing the recovery process.
Depending upon the type and cause of data loss, RAID recovery methods vary accordingly. If one drive has failed in an unallocated RAID 0 configuration built from unallocated space, chances are good that data can still be recovered by replacing it with a copy from a working drive and copying over.
Lost or Deleted Files
RAIDs are preferred due to their performance and redundancy, yet not immune from data loss. Although data recovery specialists can restore files from RAID failures, it’s advisable to back up important files as soon as possible to prevent further damage and increase the chances of successful retrieval. In case you experience data loss yourself, make sure not to use the affected drive for too long to avoid overwriting existing information on that drive.
When submitting a RAID for evaluation, a recovery engineer will ask several questions regarding its failure. This allows them to assess its extent, determine its viability for recovery, and provide you with an estimate regarding cost and timeline.
If your RAID is physically damaged, a professional can use state-of-the-art cleanroom facilities and tools to decontaminate disks and reconstruct its file system logically. However, this process may require specialization concerning RAID level, file system, hardware underlying it all, and so forth.
Data recovery engineers specialize in recovering files that have been intentionally or accidentally erased from RAID arrays. Their first step in doing so is creating an image of affected drives and then using this to scan for files to recover, which allows them to restore as much information as possible without risking further damage or overwriting existing information.
Once the recovery process is completed, a technician should test a sample file to make sure it works as expected. This step is particularly crucial when using RAID levels that use data striping and distribute files across multiple locations for redundancy. A recovery engineer can verify the integrity of files by scanning individual disks to make sure all the data is present and functional.
If you want a DIY approach for recovering deleted files from a RAID, consider using Disk Drill – a free program developed to work on personal computers that supports FAT12/16/32, exFAT, NTFS HFS+ ISO9660/Joliet UDF partitions. Once launched simply connect the storage device you wish to recover files from and select it in the list; once scanning completes you’ll be able to browse and preview recovered files.
Formatted Disks
RAID arrays are often employed by businesses to improve data storage performance fault tolerance, or both. However RAID systems cannot escape problems caused by human or hardware errors that result in data loss; backups should be maintained regularly to avoid this scenario, but recovery may prove expensive and take many hours or even days depending on their size.
Therefore, many companies employ RAID data recovery software to restore lost files. This program scans an entire array, identifying any recovered files, before saving them to disk using any file system supported by it – for instance ext2, ext3, or NTFS. Furthermore, it can recover files formatted using Linux/FreeBSD/OpenBSD/NetBSD/Solaris or Macintosh formats.
No matter the type of RAID array, recovering can be broken down into seven steps:
First, an external HDD dock must be used to duplicate all drives in your RAID array and provide the recovery engineer with an exact copy of all files stored there, enabling them to begin their investigation more quickly and efficiently. Smaller RAID arrays may forgo this step altogether but larger ones should ideally duplicate their drives quickly and efficiently for best results.
Once duplicate drives have been created, they should be connected sequentially to a host computer for evaluation by a recovery engineer. He or she will reconstruct the physical disk arrangement and rebuild the data tree structure; this step often represents one of the longest and most time-consuming aspects of data recovery.
Once the recovery engineer has located all logical units, he or she must search for files. This may prove extremely challenging if your RAID array features multiple levels of redundancy; each level requires the same number of logical disks to be examined to locate and restore files; moreover, more disks in an array increase the chance that data could become permanently deleted.
Damaged Arrays
RAID data recovery is an essential service that can make an otherwise hopeless situation more manageable. The first step should be gathering as much information about the RAID and circumstances surrounding its loss as possible to provide our experts with enough details for them to effectively recover your files.
Experts begin the RAID evaluation by creating a replica, then run diagnostics to assess each drive’s condition – this allows them to identify any broken drives that need replacing with new ones – before performing metadata analysis on each drive and gathering vital information about size, type, and order as well as reconstructing its data tree and recognizing logical units.
Physical damage to a RAID can result from natural disasters, power surges, or other catastrophic events. At Ontrack we use state-of-the-art tools and cleanroom environments to decontaminate drives and logically rebuild file systems; additionally, we repair RAIDs damaged by swapping out disks or reformatting files if required.
RAID arrays are designed to maximize performance by offering high levels of redundancy. This is achieved by mirroring data across multiple drives. As a result, read operations are very fast while write operations take only fractions of the time they would with a single disk. Unfortunately, however, RAID 5 configuration doesn’t protect you against single drive failure; should one go down while all others remain functional, all data on other drives becomes lost as well.
Backup is crucial. Without one, professional RAID data recovery may become necessary; although this process can be expensive and time-consuming if done by a reputable service that offers money-back guarantees and free quotes.
