RAID 5 Data Recovery

RAID 5 Data Recovery

Due to the high cost-benefit function, RAID 5 is currently the most frequently used RAID system. The surplus of a RAID 5 array is mostly limited to the possible failure of one hard disk. However, if for some reason another disk fails, the entire RAID volume is no longer available and may be "lost".

The experts at Gefund-IT are very familiar with the scenarios of RAID 5 data loss. Especially for standardised NAS systems of the RAID 5 configuration, you will benefit from our enormous performance capacity in view of the recovery time and cost factors involved in rescuing your data.

RAID 5: performance + parity

RAID 5 offers both increased data throughput when reading data and redundancy at relatively low cost, making it a very popular RAID variant. RAID 5 is one of the most cost-effective ways to store data redundantly on multiple hard drives while making efficient use of storage volume. However, due to high controller requirements and prices, this advantage often only comes into play with more than four disks. The usable total capacity is calculated from the formula (number of disks - 1) × (capacity of the disk). After failure of one hard disk or during the rebuild to the hot spare disk (or after replacement of the defective hard disk), the performance decreases significantly.

Data recovery from proprietary RAID formats

Some manufacturers of storage and NAS systems have developed customer-friendly and efficient RAID configurations, which, however, have a slightly different structure with regard to standardized RAID levels. What is convenient and practical for the user can become a particular challenge in case of data loss. Due to many years of experience, Gefund-IT is very familiar with most manufacturer-specific RAID systems and their professional recovery.

Some examples of manufacturer-specific RAID configurations are:

  • Drobo BeyondRAID Technology
  • LaCie SimplyRAID
  • Snap Server Dynamic RAID
  • Synology Hybrid RAID
  • Western Digital MyCloud

Which data do we save?

  • Failure of individual hard disks, e.g. due to overheating in the server, mechanical damage during transport, voltage peaks due to faults in the electrical system or after a lightning strike
  • Data formats of all operating systems like MacOS, Windows, Linux, DOS, etc.
  • Data recovery on virtual systems like Hyper-V or VMware
  • Faulty recovery; initialized and performed by the RAID controller
  • Error message: RAID Offline/ Critical
  • Error message: RAID degraded
  • Corrupt database files like SQL, MySQL, PostgreSQL, Dbase, Oracle, Filemaker, Access, MS Exchange
  • RAID group accidentally disbanded: mostly due to faulty administration
  • All file types such as images, office documents, videos, databases, CAD drawings
  • Typical RAID error messages

Competent consulting and professional data recovery at Gefund-IT!

At Gefund-IT only the boss handles your data. You have discovered a data loss and urgently need your data? What next? The easiest way is to call us. We will help you quickly and easily. With a detailed description of the problem, we can discuss in advance the possible extent of the damage, possible solutions and necessary steps. 

Tele: +49-791-49 39 04 98

We can help our customers with the following data recoveries:

There are many ways to configure a RAID array or RAID storage server. If you are working with a Failed RAID array, you need to be careful how you handle it.

What usually happens is that a drive fails, but nobody will notice because the data is still available. Then at some point another drive fails and the data is no longer available. In a panic, the person responsible for the data storage tries to get the RAID online, but in the panic they start moving drives to force the RAID to rebuild or replace hard drives to get the RAID running again. Any of these procedures can lead to data corruption and complicate recovery. 

So if you have a problem with the following RAID systems, call Gefund-IT Data Recovery immediately at 0791-49 39 04 98 and we will get your data back!

Logical data loss on RAID

  • Firmware Update Failed
  • Configuration of the RAID controller deleted
  • Deleting folders and files
  • Deleting share folders
  • RAID formatting
  • RAID accidentally disbanded
  • Loss of array data
  • Loss of the order of the hard disks
  • Encrypted volume damaged
  • Accidental deletion of the array volume
  • Virus attack, Trojan horse

Symptoms of RAID failure

  • Shares not accessible
  • In degraded mode Read only
  • Invalid RAID volume
  • Critical state of the array / composite
  • Network share disappeared
  • RAID offline
  • RAID critical
  • RAID is reported as degraded
  • Storage - compound offline
  • Symptoms of RAID failure
  • volume crashed
  • Volume crashed / lost

Mechanical damage to RAID

  • Bad Blocks or defective sectors
  • Damaged read-write heads
  • Defective RAID controller
  • Defect of the server mainboard (integrated RAID controller)
  • Defective PCB (Printed Circuit Board) Hard disk drive circuit board
  • Data loss caused by fire
  • Data loss caused by water
  • Hard drives Firmware error
  • Falling, crash and impact damage
  • Hard disk damages due to natural disasters
  • Head-Crash with hard disk in RAID
  • HDD failure due to wear and tear
  • HDD failure due to overheating
  • Motor damage to hard disk
  • Surface damage of hard disk in RAID
  • Problems with the servomechanism
  • Rebuild for mechanically damaged hard disks
  • Damaged surface within the service area

Symptoms of RAID failure

  • Device I/O error
  • Plate failed
  • No drive
  • Failed hard disk
  • Shares not accessible
  • In degraded read only mode
  • Invalid RAID volume
  • Critical state of the array / composite
  • LED on RAID hard disk red
  • Multiple hard disk failure
  • Network share disappeared 
  • RAID critical
  • RAID offline
  • RAID server beeps, beeps
  • RAID is reported as degraded
  • Server does not start or boot
  • Storage - compound offline
  • Volume crashed / lost
  • volume crashed