Re: Aix Mirroring Vs Informix Mirroring

Jonathan Leffler (obelix.informix.com!johnl@emory.mathcs.emory.edu) wrote: : In general, operating system level mirroring and hardware mirroring are : more efficient than Informix mirroring, if only because they can schedule : writes to both the primary and the mirror disk concurrently, whereas : Informix has to write to the primary and then write to the mirror. : When you don't have lower level mirroring, use Informix mirroring, but use : a lower level mirroring system if you have a choice. These rules apply to : version 4 or 5 -- they may need to be reconsidered with version 6, though I : doubt it. This confuses me a little. We are using I-Online 4.1 with rootdbs mirrored by Informix. Since Online handles raw partitions and does not use the UNIX file system for accessing the data, how can operating system level mirroring be used for Online? Maybe I'm having a terrible misconception here, please explain. Regards, Richard -- +----------------------------+-------------------------------------------+ | Dr. Richard Spitz | INTERNET: spitz@ana.med.uni-muenchen.de | | EDV-Gruppe Anaesthesie | Tel : +49-89-7095-3421 | | Klinikum Grosshadern | FAX : +49-89-7095-8886 | | Munich, Germany | | +----------------------------+-------------------------------------------+