On Thu, 2010-08-05 at 11:04 -0400, Todd Denniston wrote: > You speak of transactions in a way that makes me think you are dealing with databases. > If this is the case, then I suggest you take a few searches over to the drbd archives** and look for > database issues, IIRC in some cases you are better off (speed and admin understanding/sanity) > letting the database's built in replication handle the server to server database transactional sync > than to trust a file system or even drbd to do it, because the db engine can/will make sure the > backup db server ALSO has the data before reporting the transaction done. > Not saying that having the DB on top of gluster or DRBD too would be bad, just suggesting that you > may want to have the DB backed by something that fully understands the transactions. --- Nice analogy have you ever done this? Have you done this with separate Read Write DBs? How about streaming to a file (constant backup). The OP is talking about virtual machine images.... John