Technologies

Debian GNU/Linux L A M P virtual private servers-from-cloud
w:shell (computer), shell tools, shell script, w:secure shell, w:public key cryptography,w:private key cryptography
Core MediaWiki and it's categories, templates, extra namespaces, extensions and widgets, upcoming mw:Universal Language Selector
w:Xen and w:KVM w:virtualization by the hosting guys ( ecological )
DBpedia, w:SPARQL queries to query RDF subject/predicate/object w:triplets that are safely stored in a w:Triplestore, w:Wikiteam backs up wikis, XML Import-Export
Security, backups on dumps.consumium.org, backups on archive.org courtesy of w:Wikiteam, off-line backups on removable media and other storage w:mysqldump, Special:Export, w:anachronistic scheduler, rsync-over-ssh, w:Tripwire, w:GPG, w:MD5, triple security
Networking, TCP/IP, w:VPN, w:VNC, closed w:subnet, w:iptables firewall
Languages, w:PHP, w:python, w:perl, w:regex, SPARQL, Français, SQL, XML, RDF ...
Monitoring, w:Nagios and w:Icinga remote server and network monitoring
Stats, w:analog (program), hosting guys' stats, historical stats, coming soon http://stats.consumium.org potentially a breadcrumbs solution
Internet Relay Chat - RecentChanges irc feeds - RecentChanges regex stalk irc feeds with BetaCommandBot or similar - ircbot/mediawikibot integration -> ConsUtilityBot ( probably in w:python based on the mw:pyWikipediaBot )