Set the path to /mnt/ebs (100GB size).
curl -d path=/mnt/ebs http://localhost:8091/nodes/self/controller/settings
10 node cluster .. Total cluster storage is (1TB (10*100GB))
See the screenshot attached. Here the total size is roughly twice the actual storage available.
I think the total storage calculation is doing sum of path and index_path. Here both are same (/mnt/ebs)