Not to steal limelight from OpenTSDB - it&#x27;s great in many ways - if anyone is interested in experimenting with TSDBs, we&#x27;ve been developing HBase-based Axibase Time Series Database for 3+ years: <a href="https:&#x2F;&#x2F;axibase.com&#x2F;products&#x2F;axibase-time-series-database" rel="nofollow">https:&#x2F;&#x2F;axibase.com&#x2F;products&#x2F;axibase-time-series-database</a>. It supports SQL and is somewhat better packaged with built-in rule engine for alerting and visualization: example - <a href="http:&#x2F;&#x2F;apps.axibase.com&#x2F;chartlab&#x2F;2ef08f32" rel="nofollow">http:&#x2F;&#x2F;apps.axibase.com&#x2F;chartlab&#x2F;2ef08f32</a>. Accepts most line protocols including nmon, tcollector, scollector (works for windows, often overlooked), collectd, statsd.<p>Disclosure: I work for Axibase.