Raid 0 - Why am I constantly losing data?
You do know that RAID 0 is only striping and not only provides no redundancy, but increases the risk of data loss as the failure of any single drive can mean the loss of the entire storage pool? RAID 0 is only for increasing read and write speeds, for example for video editing.

You need at least RAID 1 or 5 for redundancy.

That being said, if you're losing data, one of the drives may be bad our you have a controller problem. I'd resolve that before moving to a higher RAID level.