RE: IDS on AIX 5.2 Offsets? lv types?

Posted in 2004

Alexey Sonkin — Mon, 2 Aug 2004 15:15:23 -0400 — source: Usenet: comp.databases.informix

Malcolm, If your logical volumes are located on a disk array (RAUD 10 or 5), then making offset not proportional to the database page size is really bad for performance reasons. The problem is that some (single) page reads would require access to two disk drives in case offset is not a multiple of page size (4k on AIX) ------------------------------------------ Alexey Sonkin > -----Original Message----- > From: malcolm weallans [mailto:malcolm.iiug@btopenworld.com] > > Murray, > I hate to disagree but I have discovered information > in the IBM web-site that refers to the Logical volume > control block (Lvcb) being 512 bytes. So why would an > 8K offset be needed? sending to informix-list