RAID Disks

%UNIPLEX %TO informix-list@rmy.emory.edu %FROM rridley %SYSTEM DHLNET %SUBJECT RAID Disks %VERIFY y %DATE 30/03/93 10:45 %REFERENCE 17107 Barry Geipel writes: >Does anyone have any experience or information about >using a RAID disk setup to for disk mirroring with >Informix? Yes - if you are planning to use disk striping , unless you are using them mainly for graphic data and/or BLOBS, my advice is : don't! :) We have been told that they are not designed for normal database access but are good for sequential data access. We have found that, using normal Informix databases, the performance is miserable compared to using independent disks. The only thing that we could do to try and improve performance was to minimize disk head movement. Once we have HP-UX 9.0 installed, we will be separating them into independent mode and using HP Mirror/UX to do the mirroring part - this provides us with much more flexibilty, especially as it enables us to spread the disk I/O load more or less evenly across the disks/disk pairs. Hope this helps, Regards, Richard Ridley DHL Asia Pacific d wir , hopeless, unless you are using BLOBS or graphic data - RAID. Thanks in advance! -- Barry L. Geipel || Email:barry@cwi.com || Lacking a muse, my mauser Compu$erve:710055,3726 || must be my thunderbolt NRA CRPA HMGS-PSW || %UEND