I changed my SMS AC routines many years ago to intercept most tape allocations, route them to disk and never looked back. Even when we went to virtual tape, it still simplified things.
No application jobs directly use tape. > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On > Behalf Of R.S. > Sent: Wednesday, January 30, 2019 8:31 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Tape Mount Mangement > > My impression is to keep all the data on DASD except HSM data (backup, > ML2) and very few ad-hoc backups. > I ve got the impression many years ago and still see no good reason to > change it. > > My other impression is it's simpler to change gazillion (usually less) of JCL > jobs > to explicitly point datasets to DASD than using TMM. > Of course virtual tape reliefs many pains of tape, but keeping things in old > way is not good for the future. > > -- > Radoslaw Skorupka > Lodz, Poland > > > > > > > W dniu 2019-01-30 o 15:03, John Benik pisze: > > I can't let this go. Several months ago I asked the question about > determining what tape data should reside on Dasd instead? > > The impression I got was put everything to disk and let HSM handle it. > Unfortunately that solution won't work for us so I continue to try to find > ways to help us determine what tape data should be on disk instead. > Yesterday in a conversation I had with my boss he mentioned that there was > a Tape Mount Management Cookbook that basically had step by step > instructions to help determine where the data should reside. It is my belief > through using volume mount analyzer or mountmon I will be able to go after > what I would call low hanging fruit and change them to disk. We have over 1 > million tape volumes in our prod environment so this is a rather large > undertaking as this number does not include HSM tape. If anybody knows > where I can find the Tape Mount Management Cookbook that would be > greatly appreciated. Or if somebody has some suggestions on how to best > attack this that would be great. > > > > Our tape environment consists of one DLM 8100 specifically for HSM > > and two DLM 8100's configured as Manual Tape Libraries used for our > General Purpose tape. > > ========================================================== > ============ > > Jeśli nie jesteś adresatem tej wiadomości: > > - powiadom nas o tym w mailu zwrotnym (dziękujemy!), > - usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub > zapisałeś na dysku). > Wiadomość ta może zawierać chronione prawem informacje, które może > wykorzystać tylko adresat.Przypominamy, że każdy, kto rozpowszechnia > (kopiuje, rozprowadza) tę wiadomość lub podejmuje podobne działania, > narusza prawo i może podlegać karze. > > mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950 > Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. > st. Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, KRS > 0000025237, NIP: 526-021-50-88. Kapitał zakładowy (opłacony w całości) > według stanu na 01.01.2018 r. wynosi 169.248.488 złotych. > > If you are not the addressee of this message: > > - let us know by replying to this e-mail (thank you!), > - delete this message permanently (including all the copies which you have > printed out or saved). > This message may contain legally protected information, which may be used > exclusively by the addressee.Please be reminded that anyone who > disseminates (copies, distributes) this message or takes any similar action, > violates the law and may be penalised. > > mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, 00-950 > Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. District Court for the > Capital City of Warsaw, 12th Commercial Division of the National Court > Register, KRS 0000025237, NIP: 526-021-50-88. Fully paid-up share capital > amounting to PLN 169,248,488 as at 1 January 2018. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
