Sorry, correct link: http://publib.boulder.ibm.com/infocenter/zos/v1r12/index.jsp?topic=%2Fcom.ibm.zos.r12.idas200%2Fs2010.htm
On 9 January 2013 20:03, O'Brien, David W. (NIH/CIT) [C] < [email protected]> wrote: > Don, > > Please refer to 11.6.5 ACS routines invoked for restoring, recalling, > recovering, and > converting data sets in DFSMSdfp Storage Administration. > > Table 11 clearly shows that Dataclass in not invoked by HSM Recall or > Recover. > > -----Original Message----- > From: Don Williams [mailto:[email protected]] > Sent: Wednesday, January 09, 2013 2:09 PM > To: [email protected] > Subject: Re: ESDS extent ... > > When HSM (or equivalent product) recalls a data set, it has to allocate > the space on the primary DASD. That allocation will need data class > attributes. > In my opinion, the HSM manuals are not clear how or where HSM gets the > data class attributes. I believe you, but it would be nice if the HSM > manuals clearly stated that the data class attributes of a recalled data > set were solely obtained from the migrated copy of data set and not from > the current SMS data class. > > From the z/OS V1R12.0 DFSMShsm Storage Administration manual: > > ============================================================================ > ============================================= > Chapter 54. RECALL command: Recalling a specific migrated data set > > The RECALL command recalls a migrated data set. If you want, you can > specify the volume and type of unit where DFSMShsm is to recall the data > set. > > If you specify the volume and type of unit when recalling an SMS-managed > data set, the volume and unit type will be passed to the automatic class > selection (ACS) Routines. ACS ultimately determines to which volume the > data set is recalled. > > The FORCENONSMS parameter allows the ability to force recall of an > SMS-managed data set to a non-SMS-managed volume. It is not possible to > convert a data set that is not extended format to a data set that is > extended format during a recall. However, you can convert an extended > format data set to a data set that is not extended format during a recall, > if you specify the FORCENONSMS optional parameter. > > ============================================================================ > ============================================= > > Don Williams > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of R.S. > Sent: Tuesday, January 08, 2013 3:32 PM > To: [email protected] > Subject: Re: ESDS extent ... > > W dniu 2013-01-08 21:26, Don Williams pisze: > > HSM Recall does not re-invoke the DataClas ACS routine (several years > > ago, I had to proof that to my teammates). Therefore a recalled data > > set will have the same data class name. Since a data class could > > affect many hundreds or thousands of data sets (we still have some > > applications that cannot handle extended data sets), I've never > > changed a data class from non-extented to extended then tried to > > recall the data set. It would be interesting to know if that would work. > > It is not matter whether DC is called or not (it's not AFAIK). It's matter > that even changed DC does not affect existing dataset parameters. > It will not affect. > Caution: parameters like DVC can be changed dynamically, but actually DVC > is some "potential bahavior" not "actual shape" of the physical object. > > Of course REPRO or EXPORT/IMPORT will change the EA parameter. > > > -- > Radoslaw Skorupka > Lodz, Poland > > > > > > > -- > Tre tej wiadomo ci mo e zawiera informacje prawnie chronione Banku > przeznaczone wy cznie do u ytku s u bowego adresata. Odbiorc mo e by > jedynie jej adresat z wy czeniem dost pu osób trzecich. 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