Bryan - ZFS / FreeNAS Qs

 Hey guys.  Thanks again for the show and your willingness to help out
n00bs like me in the community!

So I built my own FreeNAS box with an A1SRI-2558F-O Supermicro
motherboard (Atom server-grade but only 4 core), 32 GB of RAM, 2
mirrored SSDs to boot, and the same Supermicro tower case that the
FreeNAS mini uses with four WD red 3 TB drives in the hot swap bays).

It is working really well but I have one issue and one question.  The
question first:

Q.  if I do a digital ocean droplet with block storage and then zfs
send my dataset to it, how can I ensure the data is encrypted (ala
tarsnap) before it leaves my network so that even if someone big and
smart were able to read the data on that "out of my network" box, they
couldn't decrypt it?  Is having it encrypted on my freeNAS and then
doing a zfs send to the remote sufficient for that need?

Now for the problem

P.  I bought a HighPoint Rocket (not RocketRaid) 640L controller for
this setup and I keep getting SMART errors.  However, when I actually
ssh into the box and check the SMART status of the drives, there isn't
a problem.  Furthermore, the zpool shows zero errors.  From sniffing
around online it seems like people in this situation typically try a
different SATA controller.  The motherboard only supports two 6.0
speed SATA connectors (which I'm using to run the mirrored SSD boot
drives) so I want an external card.  What would you recommend in the
$100 - $200 range?  Also, any tips on making sure that my drives show
up on the same interfaces or does that even matter with ZFS?

Thanks,
Bryan