We support Scientific Linux, which is an RHEL derivative similar to CentOS.
CentOS 7
CentOS7 will replace Scientific Linux 6.
CentOS8 Stream may be supported in the future.
Scientific Linux 6 has reached End of Life
this is our mainstream version for compute servers and desktop workstations
we only install the x64 version of SL6, not the 32-bit version.
Support runs until 11/2020
Scientific Linux 5 has reached End of Life
legacy version for older applications which require it.
i386 and X86_64
Some libraries and desktop applications may not be available on 64-bit (X86_64) installs
Some features (for example, xfs file systems) are not available on 32-bit installs
Support runs until 03/2017
Scientific Linux 4 has reached End of Life
no longer supported as of February 2012
FreeBSD
FreeBSD 9.x and 10.x, X86_64 64-bit only
Some departmental infrastructure runs on FreeBSD.
Most systems are not accessible for login by non-IT staff.
This is only listed so you can be aware some other types of system exist. For example, some department web servers run on linux and some on FreeBSD. Depending on the site, you may have code which is running on a BSD system rather than linux, and may not run in the same way.