[jbellis]

Cassandra 2.0 can handle 5TB per node easily, 10TB with some care. Best to scale out, not up.

That said, if someone else has already made the hardware choice for you, you can always run multiple C* nodes on a single machine. I know several production clusters that fit this description.

[olavgg]

PostgreSQL can handle petabytes easily. However if you need to query a petabyte of data, then you need to rethink your solution. PrestoDB + Hive + Hadoop may be what you need.

[ddorian43]

so can you put petabytes on 1 server? or can postgresql shard?