RAID Data Recovery – See How It Works
RAID data recovery is probably one of the most complicated procedures any data recovery company can perform. The issues are compounded by the actions of the client prior to sending the drives in for recovery. Many users feel that it is crucial that you try and recover the information themselves or repair the array through various system utilities, and this may be good if the info is not crucial. Yet, it’s been our experience that when you have a RAID failure that has resulted in considerable data loss somebody’s occupation is on the line if this info is not recovered. The biggest piece of advise this article can offer in the event of a RAID failure: LEAVE IT ALONE.
IT professionals have lots of pressure placed on them when a catastrophic system failure happens. It’s their job to make certain that all systems are up and running. Many times, out of panic, troubleshooting procedures are started in order to correct the difficulty. Often times these processes only make a bad situation worse, and in many instances they can provide the information unrecoverable. Let’s keep in mind what this info can consist of in an average corporate surroundings. You are probably dealing with information that cost many hundreds of thousands of dollars in resources and labor to create. Much of the information probably can not be duplicated. Corporate executives really do not care to hear about how the failure occurred, or what unbelievable chain of events led up to the server crashing. As you try to describe to them what happened, and hope they realize that it was not your fault they do not care to hear the specialized jargon. They just desire to understand one thing…”why was this data not backed up, and how can we get it back?”
Instead of taking chances by yourself, call a data recovery professional. RAID data recovery can be pricey, but in most cases it’s substantially less costly than trying to recreate the data which has been lost. There’s a set process that most data recovery professionals follow when it comes to performing any recovery work. These procedures are followed and expanded upon when dealing with a RAID retrieval. In order to correctly complete the retrieval it is vital that all drives are completely operational (this is particularly true with a RAID 0). This may involve taking any damaged drives into the clean room, so they function normally in order to make the necessary repairs. Once that is completed the next step is really to make whole, sector-by-sector clones of every drive. During the cloning procedure, the initial source drive that you just sent in, is normally get in a “write protect” manner so that no data can be written to the drive. This insures the original source data is not changed at all.
Once the cloning procedure is complete, the first drives are not any longer reached and you sent in are set off to the side. They destriped and will be loaded into an emmulator after the drives are cloned. Destriping is like taking the isolated pieces of a puzzle and putting them together. Just said, the info scattered on the list of multiple drives which make up array is being taken by destriping and putting it onto one destination drive. From there we’ve just one drive in which we can finish what we would consider to be a “normal” recovery. We can finish this procedure even at the multi-terrabyte amount. If the damage to the stripe isn’t overly severe, generally in most cases a whole rebuild of all associated info and the directory structure can be completed.
As mentioned previously, RAID data recovery can be expensive. Depending on the firm you contact the costs can vary drastically. Several factors determine the price, including RAID type, file system, overall size, scenario of failure, etc. Many times effort fees and evaluation fees are charged if the information is unrecoverable. This is clear because of the period of time and resources needed to perform an individual RAID data recovery. Nevertheless, generally the costs involved in recovering the data are not even 1% of the information’s overall value. Back up your data NOW.