From CDOT Wiki
Needed by the second class:
# '''Centos 7 Full Install DVD''' (x86_64). The image is available from:
1503-01.iso - Seneca's mirror of centos. This is very fast, but is only accessible from within Seneca's network (you can't access this from home). You can burn this disc on the machines in the Open Lab.
#* https://www.centos.org/download/mirrors/ - Centos mirror list accessible from any Internet connection.
# '''SATA Hard disk in removable drive tray''' (at least 160GB). Please buy the tray from ACS or the bookstore as not all trays are compatible.