Re: HP vs Informix mirroring

In article <350EEDF9.187C@po1.cobe.com>, Ed Bidinotto <eb06709@po1.cobe.com> wrote: >We are running HP-UX 10.20 with Informix 7.23UC1 and are looking at >either working with Raid 5 or going with scsi mirroring. We have seen >great performance with raid 0+1 on another server and have not had great >results with raid 5 so here's my question to the masses. > >Does anyone have any stats on performance or even recommendations as to >which one of the above is better? I've always heard that if you are >going to be mirroring - then go with Informix however I think that >person just said that because they didn't know anything about HPUX >mirroring. I don't know the pros and cons, hopefully someone does. > >All ideas, recommendations, suggestions are welcome. > >Tks in advance >Ed > >edbid @ cobe.com Do not use Raid 5. I had a HP model 20 array maxed out with cache, with dual controllers, yada yada yada, and performace was so poor many programs simply never finished. On a D370 system, dual PA7200 processor, 512 Meg RAM with 40 rather slow SCSI single ended drives, I had a billing query than completed in about 4 hours. Substituting the array for the drives, no matter how we configured the damn thing, the query never completed (never meaning not in 3 days, anyway.) Ray Garrison