Not that they get thrown away, they are still very useful. But at least there's an alternative now.

I mean, seriously, Zabbix keeping monitoring data in MySQL? Also Piwik? That's a sick solution, IMHO. :)

(BTW, I love Zabbix and Piwik. Use them both. Only I think that having no good alternate data store at the time of their writing, their data storage is suboptimal.)