When Fortune 500 companies and government agencies experience RAID array failure, HuajunData is the name they trust for data recovery. HuajunData is the only ISO 9001 and SOC 3 certified recovery firm, assuring our clients they are given superior quality and security. Our in-house developed recovery techniques give us capabilities that allow us to recover data others deem unrecoverable. With short recovery times and the industry’s most cost-effective plans, HuajunData is the source of data recovery’s top value.

 No matter the RAID array type you use, or the size and manufacturer of the drives in the array, HuajunData will deliver a data recovery experience that exceeds all expectations.



Dedicated Team For Expedited Results

HuajunData's ISO 9001 certified, SOC 3 Secure labs and experienced raid recovery engineers are the industry leaders for fast and secure server data recovery. Our professionals are the ones to call for fast emergency RAID recovery when certified expertise and successful results are a must. RAID failures can be due to a variety of causes, including power fluctuations, software problems, and hardware problems (such as disk controller malfunctions), to name a few. No matter the cause of failure, HuajunData's recovery experts can get your critical data back to you faster than anyone else.

Data Recovery for all RAID Configurations

RAID 0 (Block-level striping) Recovery.


Technical Description
RAID 0 is a single level configuration without redundancy. The failure of any drive in a RAID 0 array will cause the whole system to fail, preventing read or write access. Data can be Huajund from individual disks; however, it is often useless without proper reconstruction information.

 RAID 0 reconstruction can be a very challenging undertaking since every RAID 0 configuration parameters can vary widely based on the unique controller implementation. Our technicians specialize in RAID 0 reconstructions, using a wide variety of tools to reconstruct RAID 0 arrays of all configurations.

Technical Attributes
Splits data evenly across two or more disks.
Provides no data redundancy.
Used to increase performance.
Can be created with disk of different sizes.
Limited to the size of the smallest disk.
Low data integrity assurance.

RAID 1 (Mirrored blocks) Recovery.


A RAID 1 configuration mirrors, or copies, the content of one drive onto another twin drive, preferably one of equal size. When data is written to a RAID 1 array, the controller assures it is simultaneously written to both disks thereby "mirroring" the information on both drives for redundancy. Since every disk in the array is a mirror image of one another, the storage capacity of the array is equal to the capacity of the smallest drive in the array, or 1/n if each disk is equal in size.

 When a drive in a RAID 1 array fails, the system will continue to operate using the redundant disk due to the mirrored data. As long as there is one functioning disk in the array, the stored data is able to be read.

Technical Attributes
Exact copy (or mirror) of data on two disks.
All data are present on all the disks.
Requires an even # of drives to operate.
Storage capacity of array is 1/n.
Fault tolerance for the array is 1-n.

RAID 5 (Striping with parity) Recovery.


RAID 5 arrays use block-level striping, meaning each files is broken up into blocks of bytes striped across all disks, as oppose to breaking up the files into individual bytes. RAID 5 also utilizes a parity bit function across every stripe to provide redundancy and data reconstruction, which is stored across all disks in the array. Data redundancy can also be implemented with a “hot spare” disk, which is an additional disk that will take over for a failed disk. RAID 5 setups require at least 3 disks in the array, 4 with a hot spare.

 All drives in the array but one must function for a RAID 5 array to work, meaning a single hard drive failure will not render the array inoperable. However, multiple crashed disks will disrupt the array.

Technical Attributes
Uses block-level striping across disks
Parity bits stored on all disks
Minimum 3 disks needed in the array.
Hot spare option for redundancy requires 4 disks.
Effective array capacity is the n - 1
Fault tolerance for the array is 1 drive

RAID 6 (Striping with dual parity) Recovery.


Like a RAID 5 setup, RAID 6 arrays use block-level striping across all disks. However, RAID 6 uses a dual parity function, meaning that each stripe has two parity bit sets. It offers higher fault tolerance over a RAID 5 array, at the expense of lowered performance due to the increased parity calculations. RAID 6 arrays require 4 disks to function.

 With the dual parity function, RAID 6 arrays can continue to function when two disks in the array go down.

Technical Atributes
Uses block-striping across all disks.
Double parity bit gives more security, but reduces performance.
Effective capacity of array is the n – 2

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Fault tolerance of the array is 2 drives.

RAID 10 (Striped RAID 1 sets) Recovery.


RAID 10 arrays, also referred to as RAID 1+0 arrays, combine the mirroring function of a RAID 1 with the striping function of a RAID 0. Data is striped over half of the drives in the array, and each of those primary drives has another secondary drive mirroring the data. The capacity of the array is ½ of the total capacity of all drives, and the array requires a minimum of 4 disks.

 Since each striped drive has a secondary mirror drive accompanying it, the array can continue to function with theoretically half of the drives in the array failed. As long as the mirrored partner of each striped drive continues to function, the array will continue to work.

Technical Attributes
Uses both striping and mirroring of data.
Provides fault tolerance where RAID 0 setups do not.
Effective array capacity is ½ total drive capacity.
Fault tolerance is between 1 drive to ½ of all drives.

RAID 50 (Striped RAID 5 sets) Recovery.


A RAID 50 array, or RAID 5+0, is a RAID 0 array of RAID 5 arrays. Imagine a RAID 0 array, but instead of individual drives, each drive is a RAID 5 setup. The RAID 5 setups function exactly like a normal RAID 5 would, meaning that there have to be a minimum of 3 drives in each RAID 5 array. The capacity of a RAID 50 array is the sum of all RAID 5 array capacities.

 Like with stand-alone RAID 5 arrays, one drive from each RAID 5 array can fail without preventing the RAID 50 to function. When multiple drives from one of the RAID 5 setups fail, that will impede the entire array’s functionality.

Technical Attributes
RAID 0 array with RAID 5 setups instead of individual drives.
RAID 5 setups write data faster than they do on their own.
Effective capacity of array is the sum of all RAID 5 arrays
Minimum # of disks in array is 6
Fault tolerance is 1 drive x the number of RAID 5 arrays.

RAID 60 (Striped RAID 6 sets) Recovery.


RAID 60 arrays, or RAID 6+0 arrays, involve multiple RAID 6 sets with data striped over one another like a RAID 0. Effectively, it’s a RAID 0 setup with RAID 6 arrays instead of individual drives. Each RAID 6 sub-array function exactly like normal RAID 6 arrays do – involves double parity functionality and requires a minimum of 4 drives to function.

 RAID 60 arrays have the same fault tolerance advantage over RAID 50s that RAID 5 arrays have over RAID 6s – the tolerance for failed drives is doubled. Two drives can fail per RAID 6 sub-array.

Technical Atributes
RAID 0 setup with RAID 6 sub-arrays
Features double parity bits like RAID 6
Minimum # of drives in array is 8.
Effective capacity is the sum of all RAID 6 sub-arrays
Fault tolerance is up to 2 disks per sub-array


Proven RAID Recovery Leaders

At HuajunData, we are the ISO Certified and SOC 3/SAS 70 Security raid data recovery experts that you want to entrust with your valuable information assets. HuajunData is committed to providing personalized care and top-notch quality services and solutions, which is reflected in every stage of your raid recovery experience. We also let our Verifiable Credentials speak for us as we Huajun what the competition may have called ‘unrecoverable’.


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