Hi John, Do the VSAM files show COMP-FORMT and USER-DATA-SIZE------------------9636537000 COMP-USER-DATA-SIZE-----------------2831001090 in the listcat(s)? This verifies the SMS compression is on. Also, you could try SMS utility ADRDSSU for backup speed. Lastly, if SMS compress is on, I suggest defining the vsam cisize as 26624 as this is the most efficient for i/o and disk space and I have never seen this have a negative impact on CICS.
David L. Mingee Principal Systems Administrator Indianapolis Production Control Data Center Operations / Operations Technical Support Work Ext 782-6460 Work Direct Dial 317 581-6460 Home 317 598-0919 / Cell 317 341-0885 -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of McKown, John Sent: Tuesday, September 13, 2011 4:55 PM To: IBM-MAIN@bama.ua.edu Subject: SMS compressed VSAM datasets This is a weird question, but I've been directed to ask it. We are converting some VSAM datasets which currently use BMC's Data Accelerator compression to use SMS compression instead. This is a financial decision. We use CA-Faver to do our VSAM backups. Faver states in its manual that it will unload the VSAM data to its archive in uncompressed form. I guess this is because Faver "knows" it is SMS compressed. When the data was compressed via Data Accelerator, Faver was unaware that it was compressed, and so did not interface with Data Accelerator to uncompress the data. This meant that the data on the tape was in a very compressed form. Which is not true with SMS compression. The result of this difference is that our backups are taking much longer. Which was a surprise to all and is causing concern. So my question out there is "any ideas on what I can do to make run faster"? So far, the only suggestion from CA is to increase the BUFSIZE on the dump. But I don't think this is ! going to reduce the run time significantly. 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
