2009/11/16 Eric Jon Rostetter <[email protected]>: > Quoting Nicolas GRENECHE <[email protected]>: > >> I plan to run a dovecot IMAPS and POPS service on our network. We >> handle about 3 000 mailboxes. I thought first buying a topnotch server >> (8 cores and 16 Go RAM) with equalogic iSCSI SAN SAS 15K for storage >> backend. > > Sounds like overkill to me, but if you have the money go for it. :) >
I prefer disk space to useless storage velocity ;-) > I run mine on an 8 core (dual quad core) system with 4G RAM, using > SATA (would have preferred SAS, but cost was an issue for us). > >> created on a separete local filesystem. My question is : for 3000 >> users, is it possible to have only a SATA backend attached to my >> topnotch server (to handle bigger mail quotas) by storing index on >> local hard drives (SAS drives) ? > > Sure. If you only have one dovecot server without any failover this > is fine. If you have multiple (active or passive) servers then more care > is required, and you need to decide on the level of risk you want to take. > >> Extra question, what is the better : iSCSI SATA backend or NFS share ? > > iSCSI would be better than NFS IMHO. > >> NFS share is more convenient to have a failover server. > > If you introduce NFS and/or a failover server, your local index question > gets much more complex... > I know it, index may be handled on NFS server on fast local hardrives. The whole stuff should be exported to dovecot server. > Is that a design requirement, desire, or future option? > It should be a future option, but index management will be more tricky as you stated. >> Thanks for your help. >> >> Regards, >> >> -- >> Nicolas Grenèche - Orléans University - France >> http://blog.garnett.fr (in french) > > > -- > Eric Rostetter > The Department of Physics > The University of Texas at Austin > > This message is provided "AS IS" without warranty of any kind, > either expressed or implied. Use this message at your own risk. >
