By simple definition, RAID is a redundant array of disks. In theory, RAID redundancy means having margin of safety - an insurance against a single hard drive failure. Redundant hard drive does not add extra capacity to the system, but having a spare copy of data organized in specified order allows a safe replacement of faulty HDD, with no data loss.
However, in the real life you may have a RAID with zero redundancy (RAID 0) or have the situation with few failed drives, when the drive swapping attempt can be especially dangerous for the data integrity and sectors continuity in the volume. Take this known fact into account before any risky manipulations with the crashed RAID in your attempts to rebuild or repair the system.
Every RAID has a critical minimum number of fully functioning drives for given redundancy configuration. Any attempt to retrieve the consistent data from incomplete set of required disks is doomed. This is why RAID recovery team must have an expert in hard drive technology.
Our team of engineers and researches has been continuously improving the performance and safety of RAID recovery technology for the past decade. The process involves precision mechanics to repair and tune up the problematic device with special tools and instruments in the lab with controlled environment, particularly in the lab's clean room. Where the damaged or defective drive components will be accurately replaced with the new matching parts; sensitive heads tested and replaced with the identical; if needed, disk platters swapped to the new spindle with the motor, calibrated and balanced to achieve steady rotation and error-free data reading.
RAID-5: Instance with two Bad Hard Drives
Let's have a close look at a typical example of NAS with a set of thee disks in RAID-5. Suppose that the diagnostic reveals that two out of three HDD are malfunctioning. The impossible at first look situation should never happen with the redundant system by definition as mentioned above. But it happens quite often due to human error or hardware problem. Anyway, in this instance we need to use for recovery only two hard drives. The third one is redundant and must be excluded from recovery process. At glance, both failed drives are equal candidates to select, but actually they are not. The problem here is that the drives do not fail at the same time. One may fail today, whereas the other one a week back or month, yet we don't know which one of two has failed-first and which one is second.
A success in data recovery with hundred percent data integrity is possible under certain conditions. The prior requirement in RAID reconstruction is using the correct set of disks. The set must include the drive (or its image) that failed last, causing the final system crash with total inaccessibility to RAID unit. Otherwise, many if not all files will be lost, outdated, or inconsistent when wrong/older drive is used in reconstruction. Data Lab 247 RAID specialists resolve the issue by repairing all failed disks and then select most relevant set of drives that worked in array until the final crash moment happened.
RAID 1 with two failed HDD
The same approach is applicable for any array, even for mirrored RAID 1 that comprised of two supposed to be identical drives. But when they both failed, which one has the latest data set?
In the order to be sure which drive of two has the most recent data - both drives must be recovered and the results are compared to each other.
Few more facts
The array distributes data across several disks in certain order and exactly in accordance with the selected RAID configuration rules. Array can be organized in many ways, but two basic configurations divide all RAIDs into two diametrically opposite data storage devices in terms of goals.
While the mirrored arrays are mostly for double-copying the same data on pair of equal volumes, the striped arrays are for combining drives into one big data volumes.
NAS RAID Recovery
All types of network attached servers are supported for data recovery in Data Lab 247.
We repair and recover Linux-based, Unix, and Microsoft servers.
So far we do not add any extras to existing service plans for additional complexity layer contributed by NAS architecture and build-in encrypting features. To check this, have a look at the price chart that covers all-included external storages for extensive data salvaging and repairs.
RAID Data Recovery Rate - effective today
You may start the data restoration process right now - just go with today's guaranteed deal: Data Lab 24/7 will recover all your requested files for the firm and guaranteed price. When by any reason you will find the recovery result is not what you hoped for, you pay nothing at all for our service. In some instances, we even proportionately reduce the cost, matching it to the harsh reality of severe damage to digital media device on physical level when some files could not be retrieved.
So, again, you go with the quote when you sure you data is worth the money and, in case of successful recovery, you will pay for the service in full. If not, there is no obligation to pay for unwanted data and you may stop/cancel the recovery process at any moment. Many of our customers had told us that they spent plenty of time searching for the company who to commission their data rescue and could not find conditions even remotely agreeable to such strict standards in this industry.
RAID data recovery service covers all data loss cases, including
Clean Room Repairs (for all internal damages like clicking noises, heads damage, motor problems,
severe media damage to platters; These problems are fixed by opening the hard drive under clean room conditions)
Firmware problems (Internal microcode damaged)
Electronic components (burned PCB)
Software recovery (File System corrupted; viruses; deleted files, etc.)
Check the list of RAID device we have already recovered the data from at Data Lab
You may be interested to have a close look at particular RAID registered in our growing database of supported devices. There is always queue in adding new RAID models to the list, besides, it is not our primary goal to put down every RAID device into the database, it's rather every device you submit to service goes through the smooth process that starts with quotation form. Consider that form as a connected link to data recovery specialist: Please take your time and answer to few questions in details about the failed array type, add info about hard drives and particularly about the critical files that must be recovered first. Please, do not send or bring your device in the lab before we review and confirm the order. We will also check our HDD-parts stock to make sure that we are ready to start and finish the recovery process in agreeable turnaround time.
Guaranteed Data Recovery Deals
RAID devices successfully recovered in Data Lab 24/7
Here is the small bit, from customers, sharing of how Data Lab 247 has the job done
Damaged HGST Ultrastar 7K4000 3Tb (in RAID) external from A computer repair shop in Philadelphia, Pennsylvania
All User data is critical! Super critical are two folders names: 1) Functional Area 2) Writing; All User data is needed however.
Notes: Customer opened the second hard drive from the LaCie NAS RAID but did not touch anything inside.
This data restoration project has been successfully completed.
Dropped Seagate ST3750528AS Barracuda 7200.12 external from Diana C.
Miami, FL USA
Unable to access the drive. Drive is part of RAID array. Customer will not allow remaining drives out of company for security reasons. Please Image the drive. Need an image to put back into RAID array/server.
Huge relief for all of us down here. Well done.
Broken Seagate BlackArmor NAS 330 STAW3000100 RAID external from GTAA manager, Toronto Pearson International Airport
RAID was tested by certified computer technician.
He advised to apply to the raid recovery lab with hard drive restoration capability because the first disk in array deteriorated to complete mechanical failure with an internal noise.
The drive from RAID was removed and tested in a separate external USB-docking cuddy.
Failed disk was successfully recovered, the array was reconstructed. Data files are OK.
Noisy Western Digital My Book Mirror Edition 2TB external from Ted W., Los Angeles, California, United States
Disk had some issues in the past, but nothing serious (problems with the power supply), now I have two hard drives that are mirrored of each other and both failed, when first failed (started clicking) I did not worry much as the second drive is an exact copy of the first one, but I removed them both from the case and hooked the working drive as a slave to copy files to another external drive I have, in the middle of copying computer hung, I tried to reboot, but no slave came up only clicking noise just as it was with the first one, so frustrating! I'm sending both hard drives for recovery - to get more data recovered all together. Ideally I'd like all data get back.
Glad you could help, my big appreciation for your special discount on the second drive recovery - that helped a lot! I'll try to stay afar from WD hard drives from now on - too complex for my petty needs as to keep my files safe. My reference of your services as reliable, professional and fair-cost data recovery firm.
Corrupted Western Digital WD Blue WD5000AAKX 500 GB (part of RAID array) from BNA Computing Inc., Shrewsbury, MA USA
Unable to boot computer-server from internal RAID.
Very positive experience doing business with your company: reliable, honest, competitive prices, professional. Thanks so much!
