Product installation root reference

AIX /usr/WebSphere/AppServer
HP-UX /opt/WebSphere/AppServer
Linux /opt/IBMWebAS
Linux on S/390 /opt/IBMWebAS
Solaris /opt/WebSphere/AppServer
Windows NT <drive letter>:\WebSphere\AppServer

Check the product prerequisites to confirm that the version of WebSphere Application Server that you are using is supported on a given operating system.