I thought the messages in this thread and the other one you created should have made the point clear, but here is some more spoonfeeding, which basically just reiterates what's written a little above:
Your guest OS file system (NTFS) does not support simultaneous access of two independent systems on the same SCSI block storage device (aka disk).
it boils down to these options:
- Try CSV (Cluster Shared Volumes), a technology Microsoft developed to allow multiple nodes in a Windows cluster access the same SCSI block storage device simultaneously (mainly for Hyper-V clusters). Still it may not work as you expect it to because this was built for a specific case where while muliple hosts have access to the disk, every file is only writable by a single host at a time (SCSI locks etc).
- Buy some 3rd party software such as MetaSAN to circumvent the NTFS restrictions
- Abandon the "nice idea" and think of a solution for your problem that is within the scope of the technology you are using.