> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:squirrelmail-users- > [EMAIL PROTECTED] On Behalf Of Paul Lesneiwski > Sent: Wednesday, February 09, 2005 1:51 PM > To: Samir Noshy > Cc: Qmail List; [EMAIL PROTECTED] Sourceforge. Net > Subject: Re: [SM-USERS] Qmail Sizing and high availability. > > > I want to know if there sizing for the qmail installation. > > I want to build qmail system with the following installations: > > > > MySQL > > OpenSSL > > Apache > > qmail > > vpopmail > > qmailadmin > > Courier-IMAP > > SquirrelMail > > Qmail-Scanner / Clam AntiVirus / SpamAssassin > > > > I want to use it for about 2500 users. > > We are a Postfix shop here, but no matter, when you're talking about > SquirrelMail, the IMAP server is the concern. Make sure you use > imapproxy (see link below), but you might not even need that depending > on how many of those 2500 people use SM (at least at the same time). > 2500 is typically fairly light load unless they all are using SM at the > same time of day. As for SMTP load, unless they get and send a real LOT > of email, you most certainly won't need to worry about load on that > front unless you expand significantly. > > http://www.squirrelmail.org/wiki/en_US/SquirrelMailPerformance > > > If anyone know the hardware (server specs.) for that installation. or anyone > > has a case like this, Please tell me. > > Again, as long as you have fairly modern equipment, 2500 users shouldn't > merit anything too extreme. > > > Another question; If I want to build a high availability system like > > clusters and load balancing between two symmetric servers, how can I > > maintain this ? > > I wouldn't bother for just 2500 users. But... it depends soooo much on > what your load looks like. You might need to have multiple SMTP servers > (doubtful), or maybe multiple IMAP boxes. It's of course common to run > more than one web server, or perhaps just offload SpamAssassin to a > couple of its own servers (SA is notoriously the highest CPU/memory user > of all the software you list). > > > Or how can replicate the data (Mysql data and Maildirs) from the two servers > > if I cannot build the cluster? > > NFS? Slave MySQL server? Regular backups? > > > Also If anyone know how to maintain this or has a similar case , Please > > advice me. > > > > > > Thank you for you All & Best Regards. > > > > Samir Noshy
Thanks Paul, I think that about 1000 - 1500 can use the system - POP & webmail - at the same time. Do you think that one duel processor server with 1G RAM -for example - can achieve that? Thanks and Best Regards Samir Noshy. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click -- squirrelmail-users mailing list Posting Guidelines: http://squirrelmail.org/wiki/wiki.php?MailingListPostingGuidelines List Address: [email protected] List Archives: http://news.gmane.org/thread.php?group=gmane.mail.squirrelmail.user List Archives: http://sourceforge.net/mailarchive/forum.php?forum_id=2995 List Info: https://lists.sourceforge.net/lists/listinfo/squirrelmail-users
