Re: raw devices - general questions

> I have 2 4-gig SCSI drives (one for a primary, one for a mirror) that > I want to configure as raw devices for Informix 7.13UC1 - a data > warehouse. > > what exactly is the offset that informix is asking for when I create > my dbspace and initial chunk? Is it in tracks? Is it the number of > tracks to skip before writing data OR the track number to start > writing at??? > I think the SCSI drive has a table of contents/VTOC at track 1, which > I obviously want to leave alone. Would my offset be 1 or 2?? The offset is in Kilobytes, so you would probably want to play safe and leave 100K or so free... > I was hoping to create two 2-gig chunks on the drive. Because > Informix has a 2-gig chunk limit, does this mean that it can't access > or "go past" the first chunk on the drive??? Will my second chunk be > available? If so, how do I calculate the offset for the 2nd chunk?? No, it will read 2 x 2GB chunks on a 4GB drive, the offset for the second drive will be offset of first drive + size of first drive. HTH. -- Ciao, Billy +------------------------------------------------------------------------------+ | I used to be indecisive, but now I'm not so sure... | +------------------------------------------------------------------------------+