Hello, Xapian have remote database mode: http://xapian.org/docs/remote.html Do you plan use it in future? I have more then 8 million letters and my xapian db use 50 gb store :) If I can use remote database, I will move database to external server from my work PC (with Pentium 4) it will be very fast! :) Thank you! -- Best regards, Roman Kravets