In Sopra Steria we manage the IT infrastructure and applications of big clients. We process millions of service tickets and infrastructure events. This massive stream of data comes from monitoring tools such as Zabbix, Nagios, Solarwinds, and higher level frameworks:
How to delete your data for good
I had to permanently erase data from a few external hard drives before selling them. Some of them were USB, some were NAS (connected through Ethernet). I collected some observations which some people might find helpful. In most filesystems, deleting