Have you ever run another e2 image on the box?
I had solo4k from release when there was no VIX, so my hard drive was initialised and formatted by VTi and maybe again by blackhole.
I had lots of hard drive problems and some crashes caused by the hard drive randomly re-mounting at media/sda and media/sdb till I removed the hard drive, reflashed with no hard drive attached, deleted the partion in and formatted in a PC, then reattached hard drive, and initialised from fresh in VIX then converted to ext4.
Since then my hard drive mounts correctly as media/hdd and I've had no further problems.