Re: Informix "hardware bottlenecks"

From: "Andris" <andris.shirons@dati.lv> > >the situation is following: > >Our software developers >are going to test their OLTP application. For testing >purposes they currently are building a server > - they can expand server without problems, money is not >a big essence here > >OS is Windows NT, IDS 7.31. > >Its HP server LH6000. > >Currently it has 1 Xeon CPU 700 MHz with 2 MB cache, and >it can be expanded to 6 CPU's. But I don't think NT will scale much above 4. >Built-in UltraSCSI2 RAID 2-channels controller with >32 MB cache, which can be upgraded to 128 MB. Do that, then. >1 GB RAM, expandable till 8 GB. 4GB should be fine. >6 discs with 19GB each. > >So far about hardware. > >They want to test application with different hardware >configurations, and draw nice graphs and see, which >configuration is optimal. > >Now, could I ask for Your advice? > >Which hardware components and in what way impact performance >of IDS? That is a very wide-ranging issue, that I can't be bothered to answer. >How important is RAID controller's cache memorys size? It can make quite a difference, but 128MB isn't really much. >Recommended RAID level? (RAID 5 or RAID 10 or else)? NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! NO RAID 5!!!!!!!!!!!! >My purpose here is to get some guidelines of what hardware parts >should be boosted to maximum, and which are not so important. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.