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FAQ
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If your RAID system isn't detected on your computer, it may mean that your RAID controller is defective or the configuration has been lost by the RAID controller.
What to do ?
It may be dangerous to attempt recreate the RAID by submitting new parameters. If you don't choose the right values, you may lose everything. For more security, ask a data recovery specialist to do that.
The RAID controller indicate that the RAID system is in failsoft mode. Nevertheless, the controller can still be functional. You should solve the problem quickly.
What to do ?
Define why the RAID system is in failsoft mode. Most probably a hard drive is defective and so the RAID system can't function properly. If this is the case, then change the defective hard drive as soon as possible, as far as the RAID system allows you to do so.
Your RAID system isn't detected on your computer anymore, so you can't access to the data beacause the controller that manage the RAID access is defective.
What to do ?
It may be dangerous to attempt recreate the RAID by submitting new parameters. If you don't choose the right values, you may lose everything. For more security, ask a data recovery specialist to do that.
Your RAID 5 system has at least 3 HDDs. If a HDD is defective, your RAID 5 system is in failsoft mode but still working.
What to do ?
You should change the defective drive as soon as possible. Normally, the RAID controller will integrate the new HDD and recreate the data, so your RAID system will be completely secured again. This operation may last a few hours.
Your RAID 5 system can take a single HDD breakdown, not more. Your RAID system isn't functional anymore.
What to do ?
You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
Your RAID 6 system has at least 4 HDDs. If a HDD or two are defective, your RAID 6 system is in failsoft mode but still working.
What to do ?
You should change the defective drive as soon as possible. Normally, the RAID controller will integrate the new HDD and recreate the data, so your RAID system will be completely secured again. This operation may last a few hours.
Your RAID 6 system can take two HDD breakdowns, not more. Your RAID system isn't functional anymore.
What to do ?
You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
The RAID 0 system is an aggregate of a few HDDs. Each file is divided into parts on every HDDs of the RAID 0 system. If a HDD is defective, there will be missing file parts so you can't access to the data anymore.
What to do ?
You should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
The JBOD system is an aggregate of a few HDDs. Unlike the RAID 0 system, the data is written on the first HDD. Then, when the first one is full, the data is written on the second HDD. And so on.
What to do ?
If the defective HDD doesn't contain any data and the JBOD system is built with two HDDs, you should be able to plug the first HDD on a computer and recover your data.
Should the opposite occur, you should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
With a RAID 1 system, all the HDDs are like mirrors of the others.
What to do ?
If all the HDDs are defective, you should ask a data recovery specialist to repair the defective device in order to repair and recover the data with the other functional HDDs.
Should the opposite occur, it means that the copy HDD is still intact. So, you can plug it on a computer and recover your data.