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Skip Navigation LinksRaid Recovery > RAID Recovery Resources > Raid 5 Data Recovery

Raid 5 Data Recovery/h1>

Remote RAID 5 Data Recovery Services

RAID 5 is a popular system of storing data. RAID 5 array provides redundant fault tolerance. At the same time it supplies parity bit distribution among the different drives. This RAID is systematically designed by combining both striping and setting up of a dedicated parity block for each drive. They do this by storing data across all hard drives equally.

Parity is a special form of data generated when data is written to the array which enables the RAID to rebuild a whole disk if one drive fails. This RAID option operates by striping the data across all the disks except one. One particular drive is dedicated to store parity data.

A block in a RAID system is a collection of many consecutive sectors on a hard disk. A series of blocks is collectively called a "stripe". Every time a block is written to a disk in a RAID 5, a parity block is generated within the same stripe.

We can call RAID 5 array as fault tolerant. This is because this system can survive one disk failure. If one disk malfunctions we can replace that with a new one. This process is also known as Hot swapping. The new disk can be rebuilt by using the parity information. This process is well known as Raid 5 recovery or rebuild.

However, in some cases this procedure might fail. In a large organization this can be catastrophic if proper prevention system is not in place. As a consequence you will have bunch of hard disks containing bits of your important business data which would be absolute waste for you as you will not have access to them anymore.

Raid 5 recovery process:

One array failure under the RAID 5 system means waste of disk. The operating system will no longer be able to detect that disc as a member of an RAID array. Thus, it starts reading and writing all the latest data to the other volumes. There are no alternate procedures through which you can reconstruct the data for the failed array. Here it is not possible to replicate the data from the working volumes. In this scenario Raid recovery process comes in to picture.

Replacement of the RAID 5 disc:

Now, in order to replace the faulty drive we need a dynamic disc drive which would have unallocated space. This should be at least as large as the volume to be repaired or bigger than that. If the disk is not of that such size the Repair Volume command will not be applicable as an effective mode.

Few points that we need to keep in mind:

  • If the damage is done out of loss of power we will be able to retrieve the data from the other storage arrays.
  • If the failure is due to cabling or hardware failure we can regenerate the data by replacing the hardware.

Raid 5 Data Recovery Prices:

Number of drivesPrice (in $)
3 drives720
4 drives1050
5 or 6 drives1250
7 drives or more1950
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