There is no reason not to make the MCDS/OCDS/BCDS extended VSAM so long as you do not create a recordsize greater than 6K (depending on your software release level).
What you need to consider is: Will making a larger MCDS going to take longer to process during MCDS Backup than several smaller MCDS data sets? DFHSM will do parallel backups if you have multiple MCDS data sets. So you just have determine where your buy off point is. I know some at IBM DFHSM will say that smaller is better (ie. multiple MCDS data sets). And that if you have ONE BIG MCDS it will probably take a longer time for that process to backup it up. Just my 2 cents worth. Lizette Koehler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
