Do you replicate every file on the server ? --- On Wed, 12/16/09, John Hester <jhes...@momtex.com> wrote:
> From: John Hester <jhes...@momtex.com> > Subject: Re: [U2] Unidata 6.1 Replication > To: "U2 Users List" <u2-users@listserver.u2ug.org> > Date: Wednesday, December 16, 2009, 1:00 AM > Brad is right. You can get > bitten by OS-level replication with U2 because hashed files > require more than one write when a record has to go to > overflow space. If the primary box crashes when only > one of these writes is done, the secondary box will have a > corrupted file. There are also issues with UV dynamic > files (don't know about UD) because some of the file > structure information is cached in memory and not > immediately flushed to disk. We do OS-level > replication on UV and got around these issues by sizing all > files to use no overflow and only using dynamic files for > temp report work files. > > -John > > -----Original Message----- > From: u2-users-boun...@listserver.u2ug.org > [mailto:u2-users-boun...@listserver.u2ug.org] > On Behalf Of Address > Sent: Tuesday, December 15, 2009 8:12 PM > To: U2 Users List > Subject: Re: [U2] Unidata 6.1 Replication > > Double-Take replicates byte by byte. > > --- On Tue, 12/15/09, BraDav <broadri...@comcast.net> > wrote: > > > From: BraDav <broadri...@comcast.net> > > Subject: Re: [U2] Unidata 6.1 Replication > > To: "U2 Users List" <u2-users@listserver.u2ug.org> > > Date: Tuesday, December 15, 2009, 10:56 PM Someone > needs to write an > > i/o agent, so U2 can be used with products like > Double-Take and keep > > record level integrity. Anyone with c++ experience > out there? > > > _______________________________________________ > U2-Users mailing list > U2-Users@listserver.u2ug.org > http://listserver.u2ug.org/mailman/listinfo/u2-users > _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
