I know, I am replying to my own post, but here is another good paper
on such topics:
http://www.netapp.com/tech_library/3024.print > Ray Jackson wrote:
> >
> ...[snip]...
> >
> > What does the list think about mounting a mail queue over NFS and
> having > 3 servers running Exim servicing the same queue?
>
> In general, do not share the individual mail queue/db files . (i.e.
> /var/spool/exim/incomig/ /var/spool/exim/db/, etc.)
> depending on the OS used, and the type of hardware/software used for the
> nfs mount points (SAN/NAS) and the type of mail file (mbx, mbox,
> maildir) storage, it can all depend. It can be done, but I prefer when
> available, to run things on different servers and pass the users to
> their server. A pop/imap proxy for example. I do hear (no real
> personal experience) that SUN/SGI have much better NFS support than does
> linux/freebsd, and lots of people like NFS and find it very stable on
> those OS's, I do know that I have had some bad experiences with linux
> and NFS. Also, something else to look into is to use SMB to do the
> remote shares. I have some very good experience with that on linux
> platforms (sharing network dirs, not for sharing spool files, never
> tried it), primarily because SMB and NFS were designed to do completely
> different things, in completely different environments.
>
> This is an old thread, but a good one :)
> http://playground.sun.com/pub/nfsv4/nfsv4-wg-archive/1999/0130.html >
> Overall, my perosnal opinion is to use commercial SAN/NAS for such
> purposes, although that can be more expensive.
>
> IBM specific, but good information:
> http://www.storage.ibm.com/snetwork/
