For such amount of data and such size will be good to use kind of NoSQL key-value database. This will give you option for better scalability in sense of disk space, paralleling search operations.
One possible option is MongoDB with very powerful select type command and very good scalability.
Other option is etcd which support extreme write speed (1000 records/s per host).

For such type of data and such size will be good to use kind of NoSQL key-value database. This will give you option for better scalability in sense of disk space, paralleling search operations.
One possible option is MongoDB with very powerful select type command and very good scalability.
Other option is etcd which support extreme write speed (1000 records/s per host).