Shane, I am referring to the *recommandation* to not fill a pageds more than 25%. AFAIR this recommandation dates from the 3380 era.
My question is, is this ROT still correct for large 3390-09 pageds (and was it still correct for 3390-03). If I replace a couple of (25%) filled 3390-03 pageds's with 3390-09's, should I keep the total space occupied for a max of 25% or could this value be raised, so I need less pageds's? Kees. "ibm-main" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > Sorry Kees, you lost me. > If (as recommended) all the page datasets are the same size, and the > occupancy is n%, why does the question arise ???. > ASM will (presumably) balance the allocation given similar response from the > disk. What does it matter what the underlying volume model is - apart from > pathing considerations ???. > The total slot count should (nominally) be the same - total and occupied. > > If you do a one-for-one replacement of (full) mod-3 with 4 Gig allocations > on mod-9, the occupancy drops by about half. > Which situation are you contemplating ???. > > Shane ... > > ----- Original Message ----- > From: "Vernooy, C.P. - SPLXM" > > > Hello, > > > > The recommandation was (possibly still is) not to fill a pageds for more > > than 25%, to allow ASM's contiguous slot algorithme to always find enough > > contiguous free slots. Does this recommandation also apply to pageds on > > 3390-09 models? > > > > I suppose the 25% figure statistically gave ASM a good guarantee to always > > find nn contiguous slots on a 3390-03. > > > > A pageds on 3390-09 can be almost twice as large as on 3390-03 (5825 cyls > > versus just over 3300 cyls). If ASM needs a maximum of nn slots, I suppose > I > > can fill a pageds on 3390-09 far more than 25% while still guaranteeing nn > > contiguous free slots for ASM. > > > > Is this true, is there a new recommandtion for a maximum size (4 GB) > pageds > > from ASM's congiguous slot algorithmes point of view? Performance is of > > course taken care of by PAV's. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ********************************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ********************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
