The OS does not guarantee space, the phrase indicates that the user will guarantee there is space. That is, the normal operation for SMS is to locate space on an appropriate volume; "guaranteed space" subverts this normal process and uses the VOLSER value the user has coded.
Greg Shirey Ben E. Keith Company -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Paul Gilmartin Sent: Thursday, March 21, 2013 4:28 PM To: [email protected] Subject: Re: DFHSM QUESTION - RECALLING DSN TO ITS ORIGINAL VOLUME <snip> I'm pretty sure I don't grasp this "Guaranteed Space" concept. It sounds as if the OS guarantees space will be available on the original volume(s) for the data set to be recalled. To do this, it must hold that space in reserve, in which case there's precious little to gain by migrating. Or will it restore the data set to the original volume (but not necessarily the original extents) by forcing the migration of other data sets as needed? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
