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For the majority of file storage within Informatics, we use the Andrew File System (AFS), which is a globally-accessible filesystem. We had previously used NFS (the Network File System), but had found it limiting in some respects. With AFS, we have an authenticated filesystem (via kerberos) with load balancing, local caching, and global access. We moved to AFS in early 2006; a fuller description of the move, and the reasons for it, can be found in the relevant Newsletter.

For a general introduction, please see the official OpenAFS Documentation pages (note that the actual version of AFS we run is 'OpenAFS'), and the slides from AFS Basics talk.

If you want to just 'dive in' but need details of a few basic commands, you might find our Top Ten Tips page helpful.

For help with setting appropriate access permissions (and remember that this is a global filesystem), please take a look at the Setting ACLs page. For other command information, see the local copy of the Official AFS Reference Manual, and also the OpenAFS User Guide.

Each area of AFS filespace has a quota, described on the disk quotas page.

AFS clients are not just available for the DICE Linux machines, they're also available for other operating systems and platforms:

AFS filestore can also be accessed on the web using ifile.

Although AFS is used for the home directories and the majority of data space, desktop machines also have local disk. The local disk filesystems are ext3.

If you need to get access to files on a remote machine, but the filespace on that machine isn't normally visible from your machine, you can often access it using sshfs.

You can access your AFS space from EDDIE. IS has a wiki page with instructions: AFS on EDDIE

UPDATE June 2016 - IS are still working on the AFS client since migration to eddie3.
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