How to create an encrypted RAID CoreStorage volume in macOS Sierra THE OLD WAY

Get the device names (identifiers) for the disks to use:

# diskutil list

1. Create an AppleRaid device

   # diskutil ar create stripe PlutoRAID jhfs+ disk97 disk98
   

2. Get the device name of the new device

   # diskutil ar list
   

3. Create a CoreStorage logical volume group

   # diskutil cs create PlutoLVG disk99
   

4. Create a CoreStorage volume

   # diskutil cs createvolume PlutoLVG jhfs+ Pluto 100%
   

5. (Optional) Encrypt the volume

   # diskutil cs encryptvolume Pluto -passphrase ‘somepassphrasehere’