Hi SMers

Can anybody write based what we have to decide
i)diskpool size
ii)number of disk pools.

We need to take 500Gb data backup(full) every day and we are using Informix
onbar.what size of diskpools  makes better performance for 500Gb data.
We are using max 4 onbar sessions at a time.
 we have 8 tape tapedrives in library.

thanks
/mani