Chris, Thanks for the reply. Using dss is to back extended files to tape/virtual tape.
Your answer said the data read will be expanded. So even by setting compact as N, the amount of data written to tape/virtual tape will be same, right? My another question is: If I set compact=N for storage class, so data sets will not be compressed/compacted. If I use same utility to copy it to tape/virtual tape, will there any difference for the data stream writing to tape? I already noticed a difference: By enabling compact option in storage class, I have very low compression ratio for data written to tape/virtual tape, do you have any idea? Regards Victor ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
