Hi, > I ask if anyone ever tried cyrus-imapd /var/spool/imap partion over an > openstack cloud storage. > I have such an idea to try it but if anyone already did it, I wanted to > ask if this can slow the cyrus-imap > access to file and folders, or if this is just good for a sort of imap > storage reiliability. Mail is a spindle-heavy workload so performance may well suffer badly on shared-fabric storage systems. > I have to implement an imap server for about 10000+ mailboxes. > any hints on the architecture I might use ? This is a good paper on sizing a mail system based on various requirements such as cost per user and total number of users: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.147.5757&rep=rep1&type=pdf + How many concurrent users do you expect? + How much storage space do you need per user? + How many concurrent deliveries do you expect? + Will you be running the MTA and MSA on the same host? + What are your backup requirements? + Will you be offering webmail? + Will you be offering IMAP or just POP? 10,000+ mailboxes isn't the largest installation, but neither is it particularly small. You'll have to find good answers to many questions before you begin in order to get a system with acceptable performance. Regards, @ndy -- andyjpb@xxxxxxxxxxxxxx http://www.ashurst.eu.org/ 0x7EBA75FF ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
