load balancing at fastmail.fm

[Marten Lehmann]

Hello,

as fastmail.fm seems to be a very big setup of cyrus nodes, I would be 
interested to know how you organized load balancing and managing disk space.

Did you setup servers for a maximum of lets say 1000 mailboxes and then 
you use a new server? Or do you use a murder installation so you can 
move mailboxes to another server once a certain gets too much load? Or 
do you have a big SAN storage with good mmap support behind an arbitrary 
amount of cyrus nodes?

Regards
Marten