Diego Woitasen put forth on 9/18/2010 7:08 PM:
> I'm looking for software that supports DMAPI on Linux. I haven't
> found anything on the web. I need to implement HSM for a mail server,
> to store old messages in a secondary storage.
> Are there something implemented? Open source or propietary one? I
> prefer open source obviously...
This may not be exactly what you're looking for, but Dovecot natively
supports two level HSM with the dbox/mdbox mail storage formats.
Bottom of the page, "Alternate storage". See also:
So basically you'd cron a script for some duration (daily, weekly,
monthly, etc) containing the above command to move old mails to your
alternate near line storage.
If it's a really busy server you may want to go with the individual user
route with one HSM script per user. This would allow staggered
scheduling of the cron jobs so as to lessen the load on the server
compared to one cron job which does all users at once.