At some point in the past, and maybe for greater than n? extents, HSM accomplished partial release by a migrate/recall under the covers. The may also be an additional SETSYS needed to enable extent reduction
> -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On > Behalf Of Ed Jaffe > Sent: Wednesday, February 21, 2024 1:33 PM > To: [email protected] > Subject: Re: Something keeps releasing space on a large (annual) DS > > [EXTERNAL EMAIL] > > On 2/21/2024 12:52 PM, Gibney, Dave wrote: > > However, HSM Partial Release should consolidate extents... > > Not in my experience. It removes "extraneous" extents (if any), but doesn't > actually do any sort of consolidation of occupied extents. > > That said, I believe if you migrate and then later recall a data set, a > consolidation does occur. > > -- > Phoenix Software International > Edward E. Jaffe > 831 Parkview Drive North > El Segundo, CA 90245 > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Furld > efense.com%2Fv3%2F__https%3A%2F%2Fwww.phoenixsoftware.com%2F__ > %3B!!JmPEgBY0HMszNaDT!v19RPyz3qPLVbvxhsix3B5bt02NriXaW69j3ZFop > m3wyEcoykkW9OjkXgCYvsKFGT1LZCYk7Yzlh1Pjwm0kgfYr- > M8m5TqZg%24&data=05%7C02%7CGIBNEY%40WSU.EDU%7C64fa6b8b02a > f404c10a908dc3324b77f%7Cb52be471f7f147b4a8790c799bb53db5%7C0 > %7C0%7C638441479982068087%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi > MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0 > %7C%7C%7C&sdata=eun2fYIkexK6nTob2BBNvsRaMZQ3SWbAxumeMiUENB > g%3D&reserved=0 > > > -------------------------------------------------------------------------------- > This e-mail message, including any attachments, appended messages and the > information contained therein, is for the sole use of the intended > recipient(s). > If you are not an intended recipient or have otherwise received this email > message in error, any use, dissemination, distribution, review, storage or > copying of this e-mail message and the information contained therein is > strictly > prohibited. If you are not an intended recipient, please contact the sender by > reply e-mail and destroy all copies of this email message and do not otherwise > utilize or retain this email message or any or all of the information > contained > therein. Although this email message and any attachments or appended > messages are believed to be free of any virus or other defect that might > affect > any computer system into which it is received and opened, it is the > responsibility of the recipient to ensure that it is virus free and no > responsibility is accepted by the sender for any loss or damage arising in any > way from its opening or use. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
