Had some issues but got it running.
First I could not get the install to check both USB drives, so I ended up selecting the one without the image on it.
Next I thought I just upload config and that's it. Bzzzzt. Wrong. What I did do was import volume and then upload config and just like that it rebooted and worked. Everything took a long time and I am not used to seeing a screen just sit there so long doing nothing. The whole process took about an hour.
Last I took the now unplugged USB drive with image and plugged it in. Went to System->Boot->Status, attached and now have a mirrored drive. This took about 5 minutes.
Easy enough to figure out and more of a mishmash of the docs.
First I could not get the install to check both USB drives, so I ended up selecting the one without the image on it.
Next I thought I just upload config and that's it. Bzzzzt. Wrong. What I did do was import volume and then upload config and just like that it rebooted and worked. Everything took a long time and I am not used to seeing a screen just sit there so long doing nothing. The whole process took about an hour.
Last I took the now unplugged USB drive with image and plugged it in. Went to System->Boot->Status, attached and now have a mirrored drive. This took about 5 minutes.
Easy enough to figure out and more of a mishmash of the docs.