Hello-
Is it a good idea to run a mail server or web server diskless? The reason I want to do this is so that all of our server's files will be in one place which will make backups more convenient. Basically I am thinking of running one NFS/TFTP file server with disks, and those disks will contain the partitions for a web server, a mail server, and a login server which will all boot diskless. Is this safe and ok performance wise? Thanks.
So, mbox format mail files can not be run over NFS because NFS does not implement posix standard file locking. You could run courier or qmail with maildir however. I use a patched version of qmail (and I love it), your can read about my experiences here (please note, I haven't quite finished this document yet and it is still a little rough around the edges): (http://tabor.taborandtashell.net/serversetup/qmail.html).
As for a web server, I don't know of any file locking problems, although for some specific implementations I would presume that they would pop up (ex: anything to do with a Berkley DB).
So, in short the answer to your question is: depends.
Note: I am not an expert unix system administrator, nor have I ever had a disk less server, I have however been monkeying with unix for about 8 years now.
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