Where I live, putting client's data on Cloud services is gray area illegal.
You give user data, which may or may not fall into the category if "sensitive user data" to a 3rd party, which in case any thing happens, won't hold up in any court.
Encryption is not feasable as a workflow.
I have heard enough horror stories to stay away from these solutions.
They are in RAID 0 because I have the projects where i'm currently working on syncs to my desktop. So if one nas drive fails i can work further.
No you can't, don't mix it up, raid 0 is striped performance, if one HDD dies you are screwed.
Raid 1 is the mirroring you mean.