You might want to consider getting somewhat more aggressive with dfHSM migration. This will free up space, reduce extents required,.....
Also consider DVC in the SMS STORCLAS. The historical pattern of DSN access (in most shops) is write/read once and fageddaboudit. HTH, <snip> Well it's not a performance issue I'm trying to resolve. It's simply having the volumes so fragmented that users sometimes have a hard time finding the amount of space they need in 16 extents. </snip> On Thu, Mar 4, 2010 at 1:30 PM, McKown, John <john.mck...@healthmarkets.com>wrote: > > -----Original Message----- > > From: IBM Mainframe Discussion List > > [mailto:ibm-m...@bama.ua.edu] On Behalf Of Mark Pace > > Sent: Thursday, March 04, 2010 12:23 PM > > To: IBM-MAIN@bama.ua.edu > > Subject: Defrag > > > > Each day I run a Compress, Release, and Defrag on each volume > > in my SMS DASD > > Storage group. Some of the volumes still remain pretty > > fragmented. Is > > there a way to defrag the Storage Group? > > > > -- > > Mark Pace > > Hum, we don't even bother. We have set things up so that almost all our > datasets are multivolume, via the DATACLAS. And by using DVC (Dynamic Volume > Count) and so on. The DASD is so fast any more that we don't think it is > worth the time to do defrags on volumes. Oh, and we try to keep a fairly > good amount of "head room" in the Storage Groups as well. > > -- > John McKown > Systems Engineer IV > IT > > Administrative Services Group > > HealthMarkets(r) > > 9151 Boulevard 26 * N. Richland Hills * TX 76010 > (817) 255-3225 phone * (817)-961-6183 cell > 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 > -- Mark Pace Mainline Information Systems 1700 Summit Lake Drive Tallahassee, FL. 32317 ---------------------------------------------------------------------- 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
