Re: Informix vs. AIX Mirroring

John Morton wrote: > > Hi there. We're just moving from a RAID5 box onto some SSA disk, so we > have to think about mirroring. Informix recommends Informix mirroring, > and IBM recommends AIX (what a shock!). We are running AIX 4.1.4 and > Informix 7.20 on an 8-way RS6000. > > Seems to me that AIX mirroring on a JFS would be easier to manage than > Informix mirroring and raw space, but I'm worried about performance > .. it's a busy oltp application. > > Any ideas or opinions? > > John Morton > mortonj@interlog.com When somebody posed this very question in an Informix class instructor, he said that by using Informix's mirroring your queries will be split up to use both, the original and the mirrored disk so they will be faster. I believe a difference will only be noticable you have a DSS instead of oltp app.