Raid data recovery is probably one of the most complex processes any data recovery firm can perform. More often than not, the problems are compounded by the actions of the client prior to sending the drives in for recovery. Many users feel that it is foremost to try and recover the data themselves or heal the array straight through various theory utilities, and this may be fine if the data is not critical. However, it has been our taste that when you have a Raid failure that has resulted in enormous data loss, more often than not, somebody's job is on the line if that data is not recovered. The biggest piece of advise this report can furnish in the event of a Raid failure: Leave It Alone.
It professionals have a lot of pressure placed on them when a catastrophic theory failure occurs. It is their job to make sure that all systems are up and running. Many times, out of panic, troubleshooting processes are initiated in order to spoton the problem. Often times these processes only make a bad situation even worse, and in many instances they can render the data unrecoverable. Let's keep in mind what this data can consist of in an midpoint corporate environment. You are probably dealing with information that cost many hundreds of thousands of dollars in labor and resources to create. Much of the data probably can't be duplicated. The intellectual value alone could be in the many millions of dollars. Corporate executives de facto don't care to hear about how the failure occurred, or what improbable string of events led up to the server crashing. They don't care to hear the technical jargon as you try to elaborate to them what happened, and hope they understand that it wasn't your fault. They only want to know one thing..."why was this data not backed up, and how can we get it back?"
Harddisk Data Recovery
Instead of taking chances on your own, call a data recovery professional. Raid data recovery can be expensive, but in most cases it is much less costly than trying to recreate the data that has been lost. There is a set course that most data recovery professionals consequent when it comes to performing any recovery work. These procedures are followed and extensive upon when dealing with a Raid recovery. The first step of any Raid recovery is to make sure all of the drives are functional. In order to properly unblemished the recovery it is critical that all drives are fully functional (this is especially true with a Raid 0). This may involve taking any physically damaged drives into the clean room, in order to make the critical repairs so that they function ordinarily again. Once that is completed the next step is to make complete, sector-by-sector clones of every drive. This is not "Ghosting", but a very low-level process that allows the recovery technician to work nearby bad sectors, and have unblemished control over how the drive functions. During the cloning process, the primary source drive that you sent in, is commonly put in a "write protect" mode so that no data can be written to the drive. This insures that the primary source data is not altered in any way.
Once the cloning process is complete, the primary drives you sent in are set off to the side and are no longer touched. The actual recovery process is performed on the cloned copies, so nothing that is done During recovery can make the situation worse. After the drives are cloned, they will be loaded into an emmulator and destriped. Destriping is like taking the scattered pieces of a puzzle and putting them together neatly. Naturally stated, destriping is taking the data scattered among the multiple drives that make up array and placing it onto a singular destination drive. From there we have a singular drive in which we can unblemished what we would think to be a "normal" recovery. We can unblemished this process even at the multi-terrabyte level. If the damage to the stripe is not too severe, in most cases a unblemished rebuild of the directory buildings and all linked data can be completed.
As mentioned earlier, Raid data recovery can be expensive. Depending on the business you taste the prices can vary considerably. Typically a Raid recovery can be priced anywhere from 0 to ,000 per drive. A amount of factors work on the cost, such as Raid type, file system, total size, situation of failure, etc. Many times attempt fees and estimation fees are expensed if the data is unrecoverable. This is understandable due to the amount of time and resources required to accomplish a singular Raid recovery. However, in most cases the costs complex in recovering the data are not even 1% of the data's allinclusive value. If you are reading this report and you haven't suffered a Raid failure, what are you waiting for? Back up your data Now.
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