Re: replication

I have used HDR extensively. There are very good reasons why Informix threw it away and created CDR/ER. If there is some "hard" reason for using HDR, then by all means knock yourself out (literally :-). Even in an ideal environment with everything configured by-the-book, HDR is very tempramental. Upgrade to 7.22 or higher and use CDR. -d At 12:11 AM 8/13/97 +0000, Jason Harris wrote: }Dear Maria, } }I have not heard of CDR and have not used ER. But have used HDR. } }This provides a hot backup type facility. Where the secondary machine }is updated based on logical log buffers from the primary machine. } }Only the primary can be updated, but the secondary machine remains in }a read-only mode. } }The adminsitrators guide for 7.1 (only one I have sorry) explains the }HDR. } }Regards, } }Jason } }On 11 Aug 1997 15:23:34 -0400, m.l.wilson@larc.nasa.gov ("Maria L. }Wilson") wrote: } }>greetings, }> }> Can someone tell me what tools that Informix has available for data }>replication in version 7.23? I know of CDR (continuous data }>replication), HDR (high availablity data replication) and ER (enterprise }>replication). Are some of these products version specific? }> }> I am looking for a replication product to support a primary and }>secondary server to create a "hot backup" scenerio. }> }> Can anyone give some greatly needed advice? }> }>Thanks in advance. Maria }>----------------------------------------------------- }>Maria L. Wilson Computer Sciences Corporation }>NASA Langley Research Center }>3217 N. Armstead Ave. Hampton, Va 23666 }>email: m.l.wilson@larc.nasa.gov }>phone: 757-766-8265 }>fax: 757-766-2571 }>----------------------------------------------------- } }