Mark, Lustre 2.1 runs on the following kernels: 2.1.0 runs on 2.6.32-131 2.1.1 and 2.1.2 on 2.6.32-220 2.1.3 and 2.1.4 on 2.6.32-279 More information can be found on the 2.1 change log at http://wiki.whamcloud.com/display/PUB/Changelog+2.1 Installation documentation can be found at http://wiki.whamcloud.com/display/PUB/Putting+together+a+Lustre+filesystem and in the Lustre manual at http://wiki.whamcloud.com/display/PUB/Documentation Hope this helps, James