So they've only tested heavy access load on a double-digit gigabyte volume? That concerns me a bit, as I'm considering migrating from HBase to Riak, which would be several TB of data.
Isn't it one storage space per vnode? If you have 256 vnodes in your cluster and each vnode is at double digit gigabytes, you end up with between two and 25 terabytes available in the cluster.
yes, afaik, that is correct. atm, there is one bitcask "cask" that is opened for each vnode. the number of vnodes (virtual nodes) each physical machine is responsible for is a function of the ring size, aka total number of vnodes in a cluster, and the number of physical machines in the cluster.