[OpenAFS] Some AFS Architectural Questions

Daniel Clark dclark@pobox.com
Fri, 27 Oct 2006 18:35:22 -0400

On 10/27/06, Leggett, Jeff <jeffrey.leggett@etrade.com> wrote:
> How does AFS compare to its stateless communication with NFS?  We have
> had problems with vendors using NFS to maintain links (EMC comes to
> mind) to storage arrays, that fail often and hard.

I'm not quite sure what you mean by "using NFS to maintain links", but
in any case AFS (like NFSv4 and CIFS) maintains state; is practice the
behavior is roughly analogous to hard NFS mounts (i.e. client blocks
until the server comes back).

However for read-only volumes with copies on multiple servers, if one
server goes down, the client automatically fails over to another