RAID Server Repair
GRAID RAID 5:
I have a GRAID RAID 5 array which connects to my Vista PC. The array has been built to use for storage, and I already have some pieces of data on the drives in question. However, when I go to view the drives in my Vista PC, I find that I can’t see any of the files which should be available. The drives were accessible before I tried to attach the array to the Vista PC, but now I can’t see any of the drives either in the PC, or in the computer that the array came from. I am able to see one drive, but it is not in the array, and it is not RAID configured. I tried to install Storage Manager so that I could get all of the drives into the array, but the computer says that it does not meet the requirements for the software, and won’t install it. I want to recover the data from the drive quickly.
LINKSTATION RAID 5:
I am trying to install an old Buffalo Linkstation RAID 5 array into a Windows 7 operating system. I have 3 WD disks which are fitted into a SATA enclosure array. This had already been created using the server as the controller, but I wanted to move the server to a new computer, with an updated OS system. When I set up the array in Windows 7, the computer sent a message to say that one of the drives could not be read, and asking me to run a recovery process. I agreed to this, but now the computer says that the Dynamic Disk has failed. I want to be able to get hold of the data which is on these drives, as that was the whole point of transferring the server, but at the moment the computer is not able to see the files, and keeps trying to recover this drive.
RAID Server Repair
RAID, which stands for Redundant Array of Independent Drive, configurations are thought to be one of the most reliable ways to store data available. It’s for this reason that RAID servers are used so frequently, for everything from small business data storage, to the storage of vital employee information in large corporations.
Due to the RAID’s reputation as being so reliable, it can come as an incredible shock when a RAID server experiences a failure, but unfortunately it does happen.
RAID servers are reliable because of their high level of redundancy, which means that even if one drive of the array fails, the data will be stored on the remaining drives, but in certain circumstances, all of the drives can fail, opening up the possibility of a loss of data.
Common problems that can lead to a RAID failure include:
- Broken arrays
- Lost volume
- Corrupted RAID configurations
- Multiple disk failure
- Controller failure
- Failed drive or drives
- Parity errors
While these are common causes of failures, this list certainly isn’t exhaustive, and there are a number of other reasons that RAID server could fail and the user could experience the potential for the loss of data stored on the system.
Often, when a RAID array fails, the user will attempt to utilize their own techniques to repair the system, including rebooting, repairing the configuration and replacing a failed drive, but frequently, these techniques do not fix the problem, and when conducted by a nonprofessional can actually cause the data to become permanently irretrievable because further damage is incurred. When someone without the proper tools and training tries to rebuild a RAID array by switching out the hard drives or replacing the controller, the result can be very detrimental to the parity and striping of the array, which will render all data permanently lost.
RAID repair should be performed only by trained and experienced data recovery technicians. The first step that will likely be performed by technicians will include a full diagnostic exam of the array, including taking sector-by-sector images of the drives. The data recovery engineers will then move onto rebuilding the array, and after the rebuild, the data will likely to be saved and tested, to ensure that it has maintained its integrity throughout the repair process.
RAID data recovery is a particularly complicated process, because RAID arrays are manufactured by a variety of companies, and in many circumstances feature different data layouts. In order to be effective in the RAID repair and recovery process, it’s necessary that technicians possess comprehensive knowledge of the configuration of RAID arrays at multiple levels, including at the hardware, firmware and software levels.
RAID server repair and data recovery typically can’t be conducted at standard computer repair shops, because it does require a specialised level of knowledge, as well as the proper tools, techniques and environment. A data recovery service can not only initialize and rebuild a new array, but can also work to get back your valuable data that could have otherwise been lost forever.