We&#x27;re having a good time with Cassandra on AWS ingesting more than 200 GiB per day uncompressed. I don&#x27;t know how you&#x27;re running your IOPS numbers, but consider allocating large GP2 EBS volumes rather than PIOPS--you&#x27;ll get a high baseline for not that much money. The provisos you&#x27;ll see about knowing how you expect to read before you start writing are absolutely true. :)<p>(Hope that might be helpful! A bunch of us hang out on IRC at #cassandra if you&#x27;re curious.)