The size of my db is more then 50GB , so I consider that the pg_dump is not a good backup tool for me. And, sometimes, I need query data which is some days ago ( between 1 ~ 14 days ). If I want to transfer my db to different PG version, I will use slony-I. :) I worried that mksnap_ffs spend much time on making a new snapshot. I don't know whether PG work very well during the period of making snapshot. Or the snapshot be made successfully when the PG execute / commit sql statments continuously. 2007/8/2, Naz Gassiep <naz@xxxxxxxx>: > Have you considered using pg_dump to backup your databases? Taking > file-level snapshots is not recommended as you may want/need to restore to a > different version of PG that is not binary compatible with the snapshot > you've taken. > Regards, > - Naz. > > > ProAce wrote: > I already put the data directory on hds san storage, but there is > no snapshot license on it. Could I use mksnap_ffs under freebsd to make > snapshot for backup ? ---------------------------(end of > broadcast)--------------------------- TIP 6: explain > analyze is your friend > ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org/