On Tue, Oct 07, 2003 at 03:20:09PM +0200, Markus Oswald wrote: > > Real fun is backing up the data as you have lots of small files across > multiple servers which are changing all the time as users access their > mail via IMAP or receive something. For 500k user you'll probably want a > quite good backup concept too. Using a SAN or NAS approach for storage > might be an advantage here. >
What about using localization with ldap and a pop/imap proxy: Users are dispatched on several real pop/imap servers postfix deliver to the correct server according to the ldap entry pop/imap proxies are load balanced and connect to the right server according to the ldap entry for that user. Like this you avoid a central storage. If one pop/imap server crash, it affects only users on this server. Each pop/imap server need to have RAID and backups ;-) I made a similar think for less users, but it works really well and seems to have good scalability. (softwares used: postfix, courier-pop/imap, perdition, openldap) My 1.9 cents. -- Emmanuel Lacour ------------------------------------ Easter-eggs 44-46 rue de l'Ouest - 75014 Paris - France - Métro Gaité Phone: +33 (0) 1 43 35 00 37 - Fax: +33 (0) 1 41 35 00 76 mailto:[EMAIL PROTECTED] - http://www.easter-eggs.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
