Oftentimes, trying to access directories such as—-
/net/fileserver/project/YYY/
Will result in an error message like:
cd: /net/fileserver/project/YYY: No such file or directory
This does not mean that your project area 'YYY' is gone or moved.
This happens when an automounted filesystem (anything under /class, /project, or /home) is not mounted. To access any of the /class, /project, or /home areas, you need to refer to them as a subdirectory of /class, /project or /home. (/project/YYY, not /net/fileserver/project/YYY).
While the path /net/fileserver/project/YYY may currently get you to your files, it will not always be present. Indeed, some day, if the fileserver that your 'YYY' project resides on became full, it could be moved to a new server, and your /net/fileserver/project/YYY path would never work. Remembering to use /project will ensure that your files are always accessible in the same way.
Here is a general overview of how the automounter works, and why you see the paths that you do:
The same process works for accessing directories in /class, and for your home directory in /home.