Fortunately, such situations are not happening very often and they can also be prevented. Sudden power loss can’t be predicted sometimes but it can be prevented if you use a device who will give continuous power to your RAID system, so when the thunder strikes, you system will continue working or will save the data that was present in that moment and no data will be lost. Such devices that provide uninterruptable power supply do not cost much, but can help a lot. There will be no need for you to recover RAID data if you have such device because no data will be lost. Simple as that.
Steps In Avoiding Bad Rebuild RAID 5
The experts say that if you want to avoid bad rebuild RAID 5 you will have to make sure that all the hard disk parts are working well. If you fail to rebuild the RAID 5 system, it will cause you a headache and you will not be able to recover the data as easy as you wanted to. In order to make successful rebuilding, there is a list of things you should or you should not do. Let us see some of the things you will need to do and then mention some things you need to avoid.
First, you will need to document the order of your storage documentation while you are doing the initial setup. This means that you will need to document the array of connection for all the disk drives that exist on your RAID 5 system. You should then test the ability of a subsystem to be recovered. Among things you definitely should not do is rebuilding the RAID 5 system if all the hard disk parts are here. Also, experts say that you should not rely on rebuilding the RAID 5 in order to recover lost data. Avoid bad rebuild RAID 5 by following these rules.