• CentOS\Debian... Gentoo and UNIX Solaris • various virtualization solutions (VMware, KVM, Oracle, Solaris Zones). Present time I prefer using Docker to isolate software installations. • enterprise hardware and storages (IBM, HDS) • SAN fiber routers (Brocade) • enterprise backup solutions such as Symantec NetBackup • monitoring solutions (graphite, collectd, Grafana)