Tell them to stop spending zCycles on compression. :) Simplify the FILTLIST to just the one VSAM file.
Or, do as I did. Extended, stripped, compressed is the default. With a DATACLAS=NOEXTEND for the few cases that can't handle it. Dave Gibney Information Technology Services Washington State University > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On > Behalf Of McKown, John > Sent: Wednesday, April 27, 2011 11:52 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: using SMS compression - how to manage > > Well, I guess it is not "more difficult" than maintaining the list. Except that > there is a limit to the number of entries in a single FILTLIST. To duplicate the > current list requires 3 FILTLISTs and a statement like: > > WHEN (&DSN EQ &F1 OR > &DSN EQ &F2 OR > &DSN EQ &F3) SET DATACLAS='DCEXTC' > > If F3 FILTLIST gets to long, I'll need to create F4 and update the WHEN. I just > don't like it. I would like something better. If, as you say, DVC does not > influence &MAXSIZE, then I might end up not assigning DCEXTC when I really > should. I would really like to eliminate all compression. But we actually do > have one VSAM KSDS which, uncompressed, might get very close to the limit > of 59 volumes (of 3390-3 space). We do not have any RDMS on z/OS and > won't get one. Management is doing their best to find a justification to > eliminate z/OS and convert to a 100% Windows shop (they want to convert > all Linux, AIX, and Solaris servers to Windows too.) They won't do > __anything__ to make z/OS better, unless is also reduces the cost to run > z/OS. Wish I could find a new vocation. Like professional Tiddley-Winkes > player (except that I have arthritis) or "mattress tester". > > -- > John McKown > Systems Engineer IV > IT > > Administrative Services Group > > HealthMarkets(r) > > 9151 Boulevard 26 * N. Richland Hills * TX 76010 > (817) 255-3225 phone * > john.mck...@healthmarkets.com * www.HealthMarkets.com > > Confidentiality Notice: This e-mail message may contain confidential or > proprietary information. If you are not the intended recipient, please contact > the sender by reply e-mail and destroy all copies of the original message. > HealthMarkets(r) is the brand name for products underwritten and issued by > the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life > Insurance Company(r), Mid-West National Life Insurance Company of > TennesseeSM and The MEGA Life and Health Insurance Company.SM > > > > > -----Original Message----- > > From: IBM Mainframe Discussion List > > [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Gibney, Dave > > Sent: Wednesday, April 27, 2011 1:39 PM > > To: IBM-MAIN@bama.ua.edu > > Subject: Re: using SMS compression - how to manage > > > > How is a FILTLIST substantially different/harder to maintain than a " > > list of dataset names and patterns"? > > > > I don't remember DVC being part of &MAXSIZE when I did this. I also > > found that setting DVC to a more reasonable number like 4 or 8 works > > just as well as 59 without the serious impacts 59 can have elsewhere. > > > > Dave Gibney > > Information Technology Services > > Washington State University > > > > > > > -----Original Message----- > > > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] > On > > > Behalf Of McKown, John > > > Sent: Wednesday, April 27, 2011 11:14 AM > > > To: IBM-MAIN@bama.ua.edu > > > Subject: using SMS compression - how to manage > > > > > > We are replacing BMC's Data Accelerator compression with SMS > > > compression. I have a DATACLAS (named DCEXTC) created which > > implements > > > this. The DATACLAS works. At present, Data Accelerator > > works by having > > a list > > > of dataset names and patterns which are used to determine > > if (and how) > > a > > > dataset is to be compressed. The only way that I have found to > > duplicate this > > > is by using a FILTLIST (actually a number of them) to list the DSNs > > and > > > patterns to be assigned the DCEXTC DATACLAS. I consider this to be > > very > > > clumsy and difficult to maintain. Is there an easier way which does > > not > > > require that the individual DEFINE desks specify the DCEXTC data > > class? I > > > cannot depend on the programmers to do this correctly. And > > they would > > rise > > > up in arms if I tried, anyway. Also, trying to use the &MAXSIZE is > > likely to be a > > > failure due to the way that our previous storage person set up SMS. > > Every > > > dataclas has a DVC count of 59. And the storage admin, > > under pressure > > from > > > the programming management, just gave the programmers some vague > > > sizing guidelines. Basically, the DVC count is used the way that > > StopX37 was > > > used in the past. To make sizing datasets unnecessary. > > After all, they > > don't > > > need to size their files on Windows or UNIX, so why do they > > need to on > > > z/OS? Just more proof that z/OS is obsolete. OOPS, I'm > > whining again. > > > > > > John McKown > > > Systems Engineer IV > > > IT > > > > > > Administrative Services Group > > > > > > HealthMarkets(r) > > > > > > 9151 Boulevard 26 * N. Richland Hills * TX 76010 > > > (817) 255-3225 phone * > > > john.mck...@healthmarkets.com * www.HealthMarkets.com > > > > > > Confidentiality Notice: This e-mail message may contain confidential > > or > > > proprietary information. If you are not the intended > > recipient, please > > contact > > > the sender by reply e-mail and destroy all copies of the original > > message. > > > HealthMarkets(r) is the brand name for products underwritten and > > issued by > > > the insurance subsidiaries of HealthMarkets, Inc. -The > > Chesapeake Life > > > Insurance Company(r), Mid-West National Life Insurance Company of > > > TennesseeSM and The MEGA Life and Health Insurance Company.SM > > > > > > > > > > > ---------------------------------------------------------------------- > > > 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 > > > > > > ---------------------------------------------------------------------- > 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
