Sharing a VRTX Virtual Disk

I have two troubles with VRTX virtual disk.

1> I am trying to share a virtual disk among all my blades however when I mount this virtual disk on all blades, the blades do not see each other's data. This means that say folder /data on each blade is actually different and have different content in it although it is the same disk. is this by desing?

I have tried this in Multiple Assigment mode and I am running on Ubuntu 16.04. I plan to use cluster services later but first, I am trying to get the basics going and figure out what is going on. You help is appriciated.

2> Only when I select RAID0 for this virtual disk, I can assing it to mutiple blades (adpotors) event if I it is on Single Mode Assigment. Is this behavior expected? If so, what's different about RAID0?