Re: 2 gig limit and large disks

Vladislav G. Gerches wrote: > > > > I have run across a problem and am looking for help. > > > With new disk arrays using larger disks (i.e. 9 gig devices) > > > and raid-5 (5 disk sets) how can I break up an array > > > of 36 gig if the operating system will only allow 8 slices > > > and informix will only allow a 2 gig chunk + offset??? > > > =20 > > > Am i missing something or is raid-5 not an option > > > =20 > > > I am on ODS 7.23 uc1 and solaris 2.5 > > > =20 > > > Any insight on this problem will be greatly appreciated. > > > =20 > > 2gigs chunk size is mandatory if you are using onmonitor tool, > otherwise if you using onspaces tool you are able to make > chunks of any size. DO NOT DO THIS! Yes older versions of tbspaces/onspaces allowed one to add chunks larger than 2GB but this is BAD BAD BAD. If the engine tries to write to the space beyond 2GB the fseek offsets will wrap and overwrite existing data. I repeat DO NOT EVER DO THIS. Some of the newest ports onto 64bit machines allow larger chunk sizes but THIS WILL BE DOCUMENTED IN THE RELEASE NOTES. READ THE RELEASE NOTES to determine the maximum chunk size for your platform. Art S. Kagel