On Tue, 19 May 2009 10:07:56 -0500, Wissink, Brad [ITSYS] <bjwi...@iastate.edu> wrote:
>But my question is why create a 3390-1 for each of the individual data >sets, like RACF db, Jes checkpoint, etc when I can create a 3390-27 >(specifically 30015 cylinders) and use PAV's. Shouldn't that give me >the same functionality without having to manage a bunch of small >volumes? > > One word... RESERVE. Unless you are running GRS star or MII with a CF control file and are converting all RESERVEs to global ENQs, RESERVEs are still a problem / issue and can cause lockouts / deadly embraces, etc. If you _are_ converting all RESERVEs and have HIPERPAVs, which can provide enough aliases for a sudden burst of I/O, then I think you don't have to worry about small volumes, mini-volumes, hypervolumes or whatever you wish to call them. Static PAVs would probably be okay also if you plan well. Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:mark.zel...@zurichna.com z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
