RE: raw device dbspace size >2GB
Posted in 1999
> > > Informix confirmed to me some while ago that 2GIG is max size of > (CHUNKSIZE-OFFSETSIZE). ie. you can have a max chunk of 2gig if the > offset is 0, or 1gig if the offset is 1gig. There are exceptions and > work-arounds as listed below: > > - 64bit engines *may* allow bigger offsets/chunk sizes (we used DEC > Alpha 64 bit at the time and 7.11 did NOT allow the bigger > offsets - it > appears the engine has to be compiled with some kind of 64bit > flag set). The last I'd heard was this was not officially supported, but things change:-) > > - Use a logical storage manager (LSM) to divide your physical disk up > so to the OS it looks like many smaller disks of 2GIG. This is how we > get around the 2GIG limit and I think most other sites also use this > workaround. This seems to contradict what you said early "You can use a raw device size as large as the disk, whatever that may be. With raw disk 2GB is not a constraint. " Paul Watson # WF Software Ltd # I don't suffer from Tel: +44 1463 674729 # stress, I'm just Fax: +44 1463 678729 # a carrier www.wfsoftware.com #