Gordon:

> I don't have any suggestions on the benchmarking front, but I can offer 
> a few pieces of very general advice:

Thanks for the advise, some are not applicable unfortunately.  For a 
clearer picture; our setup is the following:

* NetApp Filer with FC disks serving NFS
* 4 Linux servers mounting NetApp volume for user Maildirs
* Mail is spooled on local drives before being delivered to NFS Maildirs
* Mail services (IMAP, POP, SMTP) are load balanced with network load 
balancer

We've already broken up his mail quite a bit (by first letter of e-mail, 
by year) but that leads to him complaining about not being able to find 
any given e-mail.  This is a man who pretty much has every e-mail he's 
ever received for the last 8+ years.

Even with this break down some of his folders are still rather large, so 
we may have to investigate breaking it down further.  Is there a known 
limit to the number of subscribed folders?

Regards,
Bob

-- 
Earl (Bob) Kinney
Manager of Research Computing
Harvard-MIT Data Center

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