Q: how to improve the RAID5 data recovery success rate
A: For IT administrators, experienced RAID data disaster is always the most headaches, because the relevant recovery techniques involved The knowledge is too broad, and the average administrator or even the engineers of the server manufacturer cannot solve it. Since the RAID data disaster should not be handled by the administrator, what should the administrator do at this time? We interviewed the senior data recovery engineer at Feike, and he will tell you how to ensure a high recovery success rate. Do not force the line
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dangerous operation method of a hard disk when a server fails, the server will have a generally Offline indicating light, which requires a user to replace the same hard disk intact And re-verify the algorithm. It is reasonable to say that this is a very normal operation process, but it is not known that many RAID disasters are caused by this.
to a relatively large number of hard disk RAID5 array, for example, multiple hard drives are likely to purchase the same time, there have been several instability. The server's Offline prompt may not be the most accurate, often false positives (also have hard drive instability) or miss other hard drives that also have hidden dangers. In the seemingly normal forced online process, the hard disk needs to perform a large number of read and write operations. This is a severe test: if you are lucky, it will naturally pass smoothly, and if you are not lucky, other hard disks will suddenly drop. It makes the problem even more difficult.
Of course, the emergence of a hard disk dropped prompt, tips or dropped within the range of fault-tolerant RAID, or forced to operate on the line that must be performed. However, before proceeding with this step, it is strongly recommended that you check the stability of each hard disk so that it is more secure. Don't ignore such a small detail, often this step can make the RAID server inevitably. Data nothing to do it the safest
For manufacturers, all warranty limited to hardware, which means that after a disk array failure caused by:
first site protection The crisis has nothing to do with it. Responsible for replacing or repairing users is considered to be “exhaustive”. But what users need is not to retrieve the hard drive or rebuild the RAID, but more valuable data. If you look for the whole machine manufacturer, this is tantamount to "satisfying yourself", because the so-called after-sales service does not start from the user's original source requirements, as soon as possible to ensure that the hardware equipment is intact and sacrifice data. Of course, server manufacturers or agents of well-known brands will actively choose to pay for the service data recovery of large customers' RAID data, but this is only a few cases.
According to the engineer in charge of passenger flight data recovery center introduction, because service providers looking for service engineers to repair the case which led to the total destruction of the final data will occur almost every week. After all, after-sales service engineers are mostly biased towards hardware, while RAID data recovery is based on software operations.
Moreover, even a simple test operations, it is also possible to recover the data inconvenience later. Take ordinary RAID5 recovery as an example. When the hard disk damage exceeds the fault tolerance, the image of the damaged hard disk must be completely extracted for the final recovery. If the hard disk is frequently powered on, it is easy to cause further fatigue damage to the magnetic head and even scratch the disk. The correct approach should be to consult a professional data recovery service provider immediately.
choose a professional data recovery service providers: to refrain from disorientation
recovery center based on statistical data fly off, a lot of data recovery cases of failure because the user did not seek the right way to solve . The after-sales service that the server users rely on is often not professional enough. After the RAID disk array has problems, it is easy to choose to rebuild, and the data loss situation is even worse. When choosing a data recovery service provider, judging by scale and industry reputation is a feasible shortcut. In this respect, the service network has a deep accumulation of the Feike data recovery center throughout the country, which can help the users who encounter the RAID data disaster to weather the storm in time.