Do not setup the RAID again, because that will format the drives, then it will take serious recovery to restore anything that might be there.
I know that the drive supports RAID roaming, which means that you can remove the drives and put them into another RAID supporting system and still have access to the data. You could try a couple things, while will not effect your data.
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Turn off the EX4
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Remove your drives ** Note what bay each came from.
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Turn EX4 back on and let it book up.
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Check for any FW updates (while there are no drives) *don’t really need to do this,but would not hurt.
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Shut down the unit
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Re-insert drives **In same locations they came from
Power up the system and see if it recognizes the drives.
I cannot imagine that your data is lost, it just might take some recovery method to bring it back.
