If you have never faced the loss of data, you still need to take precautions that your server, hard disk or RAID stay in good health. Also, you need to have some sort of plan in mind to help you in case there is any problem. Data losses, if and when they happen, take time to amend and may be expensive The primary symptoms of data losses are:
• Error messages telling you that the device is not recognized
• Previously accessible data is suddenly nowhere to be seen.
• Scraping or rattling sound in the drives especially hard disks.
• Hard drive may not spin and may be still.
• Computer or hard drive does not function at all, like no booting is possible.
Mostly data loss is due to drive failure. Most hard drives rotate at very high frequency and that causes physical wear and tear. Sometimes the corrupted Master Boot record may be the culprit also.
Data recovery is in fact the science of putting the file system back together so that data files can be accessed again. Every operating system has a file system, which nothing but a unique method of indexing and keeping track of the files.In case of lost data, file systems can be very complex, and that’s why it can be so difficult to locate missing files.
The best data recovery companies have developed proprietary tools to work with all of the main file systems in use today. Recovery engineers are internally trained to work on data recovery, working with computer hardware for a number of years and learning the low-level specifics of every type of file system.
Data recovery can either be worked out with help of software and some simple steps. This is usually the case when the drives are not physically damaged. In case they are damaged, you need to send the drives to the specialists who will take care of the data and work it out for you.
To recover hard drive data, lost due to physical damage, you need to decide the optimality as the costs of data recovered need to be balanced with the cost of data involved. In case, the data lost is not critical, just take a lesson from this failure. Replace the faulty drives and start backing up. There should be adequate drives and a schedule so that regularly you create copies of your data.
