On Tue, Apr 03, 2012 at 11:05:20AM +0100, David Whiteman wrote: > I am currently looking into GlusterFS to use as a storage cluster > for our email storage. I want to mount the storage from different > servers (or VMs), services accessing the storage include exim, > courier-imapd, courier-pop3d. Our emails are stored in MailDir > format, which is many small files. I have read that GlusterFS > doesn't perform very well with small files, is this still the case? Depends. A *replicated* volume may be very slow, but maybe you don't need this - e.g. you can use a non-replicated (or distributed) volume, with geo-replication to make an off-site disaster recovery backup. It's a tradeoff between high availability and performance. > Is there any utilities I can use to test the performance? I think on coker.com.au there are some benchmark utilities for mail delivery and retrieval.