Re: Informix on RAID-5

As cheap as disk space is, I think it's mostly a matter of personal taste. If you need to write much, Raid 0 or 1 will be somewhat faster. If you mostly read, Raid 5 provides a nice additional level of protection without consuming double the disk space. Just make sure you have enough Raid5 dbspaces/chunks so that you can get lots of page cleaners cranking in parallel for quick checkpoints. Definitely don't Raid 5 the write intense stuff, that will really smart. greg Jeff Craig wrote: > > Does anyone have any sage advice regarding implementing an Informix > database on a RAID-5 system? I am wondering how best to use Informix > fragmentation in light of the fact that RAID-5 has already striped the > data across disks. Since a RAID-5 "logical" drive is composed of several > physical drives over which data is spread by the RAID software, should > I try to fragment across logical drives? Should I skip Informix > fragmentation for RAID-based data? I am not planning on putting the > write-intensive stuff (logical and physical logs, temporary chunks, etc.) > on RAID-5.snip.... Greg Moye Electronic Data Systems Corp. - Plano TX