Even though RAID has better performance in data storage than a single hard drive, it is still prone to failure. This article will provide 5 effective do’s and don’ts after RAID failures to minimize or avoid data loss.
For common computer users, one hard drive is enough to store their data. But for businesses, it would be a better choice to employ RAID, which is able to combine multiple hard drives. It realizes data redundancy and improves the performance of data access. However, in spite of its array use and large storage capacity, RAID can fail likewise. Hence, it is inevitable that RAID users should keep concerned about their data, too. Then, what to do and what not to do in the event of RAID failures? 5 important tips will be exhibited hereinafter.
1. Make Additional Backups Offsite
More often than not, RAID system can keep working when a drive breaks down in that it has redundant drives. But when a second hard drive malfunctions, it can get failed. Therefore, so as to avoid undesired data loss, you should make an extra backup for your critical files, such as PST files which contain significant business dealing emails. Thereby, even if RAID fails thoroughly, you can recover PST email easily. External hard drives, cloud, or tapes are good solutions for offsite backups.
2. Stop Using RAID System
When RAID fails, several issues will occur. When you detect out the failures, you should stop using the RAID system immediately. It is the best way to protect data from being lost. If you continue to use it, you may overwrite the internal data and make the current situation more terrible.
3. Don’t Replace the RAID Control
RAID control failure is one of the common issues. The control’s role is to manage and control all the hard drives. So if it fails, the system must go on strike. Some laymen will think about replacing a RAID control. But in reality, it cannot resolve the problem, and even push more data into unimagined danger.
4. Don’t Replace Circuit Boards
RAID is made up by hard drives. Provided that the hard drives’ circuit boards get damaged, the RAID failures will definitely happen. So if you check the RAID system and find the circuit boards are damaged, what should you do then? Actually, it is inadvisable to replace the circuit boards. Each hard drive has its unique circuit boards. Not all the circuit boards can be compatible to the drive. Hence, it is quite risky to replace it. If something wrong is done to the drive by mistake, the drive can be destroyed permanently.
5. Make an Image before DIY Recovery
It is always suggested to take recourse to expert recovery service. But if you still want to have a try by yourself, you had better to make an image for the server. As we all know, human errors can lead to data loss. Therefore, in order to prevent your DIY recovery from destroying your data without leeway, making an image before recovery is more than a matter of necessity.
Shirley Zhang is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including repair SQL Server db corruption and outlook repair software products. For more information visit www.datanumen.com