The HSM manuals do not clearly state that the objective of HSM is to re-create the dataset as it was previously created. For example, with the right options a HSM recall can convert a SMS-managed data set to non-SMS-managed and vice versa (with some restrictions, of course). I agree that some changes like making the LRECL smaller or converting from/to EBCDIC to/from ASCII would destory data. However, HSM could be designed to perform useful minor format changes during a recall. I would love it, if HSM had recall options to change the primary and secondary allocation quanities, non-EA to EA, change blksize or cisize, etc.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of R.S. Sent: Wednesday, January 09, 2013 3:52 PM To: [email protected] Subject: Re: ESDS extent ... W dniu 2013-01-09 20:09, Don Williams pisze: > 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. HSM role is to re-create the dataset as it was previously created. It is not the moment to change "physical shape" of the dataset like LRECL. Is EA "physical" like RECFM or RECSZ or CISZ or rather "potential" like DVC or Secondary allocation? That's the question. I bet it is physical, I'm sure Extended FOrmat is physical (it does affect allocation). Dataclass change could affect (change) parameters of newly-created datasets, for example change LRECL (RECSZ for VSAM). Such change cannot be performed for existing datasets, including scenario when a dataset is restored. THat would destroy data. -- Radoslaw Skorupka Lodz, Poland -- Tre tej wiadomoci moe zawiera informacje prawnie chronione Banku przeznaczone wycznie do uytku subowego adresata. Odbiorc moe by jedynie jej adresat z wyczeniem dostpu osób trzecich. Jeeli nie jeste adresatem niniejszej wiadomoci lub pracownikiem upowanionym do jej przekazania adresatowi, informujemy, e jej rozpowszechnianie, kopiowanie, rozprowadzanie lub inne dziaanie o podobnym charakterze jest prawnie zabronione i moe by karalne. Jeeli otrzymae t wiadomo omykowo, prosimy niezwocznie zawiadomi nadawc wysyajc odpowied oraz trwale usun t wiadomo wczajc w to wszelkie jej kopie wydrukowane lub zapisane na dysku. This e-mail may contain legally privileged information of the Bank and is intended solely for business use of the addressee. This e-mail may only be received by the addressee and may not be disclosed to any third parties. If you are not the intended addressee of this e-mail or the employee authorised to forward it to the addressee, be advised that any dissemination, copying, distribution or any other similar activity is legally prohibited and may be punishable. If you received this e-mail by mistake please advise the sender immediately by using the reply facility in your e-mail software and delete permanently this e-mail including any copies of it either printed or saved to hard drive. BRE Bank SA, 00-950 Warszawa, ul. Senatorska 18, tel. +48 (22) 829 00 00, fax +48 (22) 829 00 33, www.brebank.pl, e-mail: [email protected] Sd Rejonowy dla m. st. Warszawy XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, nr rejestru przedsibiorców KRS 0000025237, NIP: 526-021-50-88. Wedug stanu na dzie 01.01.2013 r. kapita zakadowy BRE Banku SA (w caoci wpacony) wynosi 168.555.904 zotych. ---------------------------------------------------------------------- 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
