Mike, The volumes you are referring to would have to have a different size (3390-9 or larger) for MSR to make a difference, and the CU/DASD in the storage formatted as RAMAC (3390-3R) for availability to make a difference. If these things are not different then columns 3 to 7 will not make a difference.
Guaranteed Space, Init ACC Response and Sustained Data Rate do not affect the EDL. I suspect the broken VTOC Index is affecting the Freespace values used to build or exclude the volumes from the Primary EDL. Ron Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of > Mike Schwab > Sent: Tuesday, September 14, 2010 3:17 PM > To: IBM-MAIN@bama.ua.edu > Subject: Re: [IBM-MAIN] z/OS sms dasd selection? > > In our shop, we occasionally have our VTOC Indexes get disabled. > Unfortunately, these volumes then fill up with datasets and cause out > of space abends, even though there is plenty of space on other > volumes. I suspect that Storage Class performance requirement columns > 3, 4, 5, 6, 7, 13, 15 are causing low performance request classes to > get allocated to these volumes instead of volumes with working > indexes. Setting the volume to Disabled, New then rebuilding the > index does work, but I am trying to avoid the volume filling up in the > meantime. > > So, would changing those columns (or your list of columns) to blanks, > or the same value, across all storage classes, stop the skewed > allocations? > > -- > Mike A Schwab, Springfield IL USA > Where do Forest Rangers go to get away from it all? > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
