I could use either an ext3 driver for OSX or Linux in a VM (which would be my preferred solution) but these are both a last resort for retrieving current data assuming a hardware failure has occurred prior to the next scheduled backup to the external eSATA drive. I am not certain whether the devices I am considering use partitions inside a LVM but if I use Linux in a VM then that should not be an issue?
Be aware that direct disk access in a number of VM programs (VMware, whatever MS VM is called and a couple of others that I can't remember) is (at best) difficult to use particularly when you get to drives over 1TB.
What I was trying to do.
http://lime-technology.com/forum/index.php?topic=5030.0http://communities.vmware.com/message/1448042#1448042I did get it working with a special SCSI driver in unRAID eventually but had to resort to windows command line (DISKPART) to make disks go offline properly.