> less resource intensive becuase of the indexes, which are small > databases which contain information about the users mail. Don't make > your choice base on this alone, becuase it is not very easy to cluster > cyrus servers. If you only have one server then choose cyrus, but if you > possibly are able to accumulate older servers to cluster them, then > choose courier. So memory footprint and cpu consumption are not significantly different? I gather then that to cluster cyrus, you need to not only share the actual mailboxes but also /var/imap?