Junsato,  Edit the conf.txt in /opt/emc/scaleio/sds/cfg and add this line: tgt_dev__max_capacity_in_gbs= where the GBs is how large you need supported. 8192 should suffice there.  Then set the SDS into maintenance mode and then stop/start the SDS process and bring the SDS back out of maintenance mode. That should allow you to work around the issue.
The ScaleIO 2.0.0.2 states that it now supports a 8TB device for SDS.  However, I am getting error "the specified device is too large" error.  Is there anyone here with the same issue?  [IMAGE]  No luck from scli either, which makes sense because UI is basically just translating the action to scli commands behind the scene.  [IMAGE]  Anyone of the same boat? I'm on Ubuntu 14.04 LTS, ScaleIO 2.0.0.2, Infiniband QDR / IPoIB all around.
Any luck with 8TB device anyone?