On Sat, 17 May 2008 20:09:50 +0100 Karanbir Singh <mail-lists at karan.org> wrote: > I believe you can run DRBD so primary writes dont return till the > secondary write also completes. No idea how that impacts performance :D Default mode of drbd operation is synchronous as you mention and its performance is purely dependant of underlying block device. Having a gig of battery backed write cache on each side helps :) Asynchronous mode of operation is actually a special case for drbd and is primarily meant for geographically distributed setups that replicate data over wan. But as the opening poster said he has a small number of users, drbd with standard sata disks should be fast enough. -- Jure Pečar http://jure.pecar.org/