load balancing at fastmail.fm

[David Newman]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 2/12/07 5:41 AM, Marten Lehmann wrote:
> Hello,
> 
> what do you think about moving the mailspool to a central SAN storage
> shared via NFS and having several blades to manage the mmapped files
> like seen state, quota etc.? So still only one server is responsible for
> a certain set of mailboxes, but these SAN boxes have nice backup and
> redundancy features which are hard to get with common servers and there
> shouldn't be mmap problems as long as all indices remain on the blade on
> a separate metadata-partition.

Cyrus and NFS don't get along due to locking issues; I believe this is
covered in the docs. I tried this about a year ago and it spewed errors
at an impressive rate.

Instead, you might want to check out the Cyrus IMAP Aggregator Design
page, which allows you to distribute mailboxes across multiple servers:

http://asg.web.cmu.edu/cyrus/ag.html

dn

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (Darwin)

iD8DBQFF0HxpyPxGVjntI4IRAlA8AKCFPCJAFuXkoeyTqI4ofTgoPvxIxACg+spS
sLbF5pLBdqaF64S9QnJZe9M=
=oNKh
-----END PGP SIGNATURE-----