Partition size seen in Windows DIFFERENT than iSCSI logical volume defined in Dss7

[To-M]

If you use to be able to access the files then now you are not able too then I would look at the RAID Array before you perform any Check Disk operation on the Windows side.

[mfred]

If you use to be able to access the files then now you are not able too then I would look at the RAID Array before you perform any Check Disk operation on the Windows side.

No event signaled from Areca hardware Raid Array.

Just, suddenly, in the evening o in the night (I don't know exactly) something happened somewhere so that from Windows the partition became 0,5TB instead of 2TB...
Take note that I was able to copy as much as 1.5TB of data just few days before in that partition and everything was apparently running smoothly!

[To-M]

I have seen things happen without events from the RAID controller due to several factors. Again if nothing has changed the RAID controller would be the 2st place to start to look then the Windows OS Event logs. After that you might want to submit a support ticket.