How Data Recovery is Performed on Failed RAID 5 Arrays

RAID 5 are used for many applications because they are mostly part of the cost-effectiveness and provide a level of fault tolerance is not provided by other levels of RAID. As with any RAID level, RAID 5 may have many different types of problems. This article offers a brief analysis of some problems that cause failure RAID 5 and how the data recovery can work to solve these problems.

Issues that may cause RAID 5 Failure

Bad Sectors


A RAID 5 can fail due to bad sectors on a disk in the array. This can force the table to disconnect.

Corrupt Data

A RAID 5 can suffer from data corruption due to several reasons, including viruses, user errors, overwriting the files, and scratches on the surface of the disk platters.

Degraded RAID 5

A RAID 5 becomes degraded when there is a loss of one disk. This causes a huge decrease in performance and also removes the fault tolerance of RAID 5. Operating a RAID 5 is dangerous because the loss of a second disk causes the entire network to be lost.

Deleted Files

Many times a user to accidentally delete important data in a RAID 5. Other times it is done deliberately by disgruntled employees. In most situations, deleted files can be recovered.

Missing Scores

In many cases, the partition table may be corrupted or missing causing an entire partition to disappear or become unusable. This makes the retrieval of necessary data. Trying to recover with the software will increase the risk of permanent data loss.

RAID 5 Controller Failure

A hardware RAID 5 uses a controller that contains all the logic and manages the operations of the table. For many reasons, the table may experience a controller failure. This can cause the table to not boot. It could also cause the logical volume to disappear.

Disk failure RAID 5 / RAID 5 Drive Failure

A RAID 5 is a set of three or more disks. Any of these drives can fail. A RAID 5 is configured with the ability to withstand the failure of one disk at a time. In most cases, the RAID can be recovered in a lab data recovery using parity data written to the disk array. Even if more than one disk fails, data recovery is still possible in a laboratory recovery.

RAID 5 Failure Firmware

Firmware problems may occur in the controller or RAID disk drives member.

RAID 5 Rebuild Failure

For various reasons, a RAID 5 can find a rebuild failure. This may keep the member disks offline and bring all unusable.

Server Crash

Several times, the host server has problems and can block. Of course, this makes the table inaccessible. A lab data recovery can recover data from disks.

How can RAID 5 Data Recovery is a success

If you encountered a failed RAID 5, it is important that you do not take matters into your own hands. This can cause the parity data to be overwritten. Parity data, which is written on the disk member is in many cases necessary to ensure a successful recovery. The first thing to do is turn off the RAID server immediately to ensure no other writes are performed. Any event describing what happened in May to causing the problem must be noted. If the member disk drives are removed from the server, they must be labeled in the correct order, they were removed. The next disc is very important if time is of the essence. It is also important if you have a large number of disks.

To ensure effective data recovery, it is important that the failure of the RAID 5 remain intact. More information can be found by visiting the RAID 5 recovery.
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Andrea Stone is employed with ReWave Hard Drive Recovery, a company of data recovery service to customers worldwide in cities like Atlanta, Charlotte, Dallas, Houston, Los Angeles, Memphis, Miami, Nashville, New Orleans, New York , Orlando, Phoenix, Raleigh, Richmond, San Antonio, San Diego and Tampa. Visit the website ReWave Hard Drive Recovery for more information about RAID recovery and data recovery.

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