Hitachi Dynamic Pools (HDP) on HDS kit. NB the anti-skew characteristics of HDP and Fast VP makes me wonder why anyone would still use basic format volumes any more.
So, from my perspective, it is not always good to define all one type of device (mod54, mod27, etc...) the Internal mapping of the LUNs to those devices might leave unused storage, or if you have something like FAST VP (EMC VMAX) then the FASTVP may have problems properly balancing the workload inside the array. Just my two cents worth Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of Vernooij, CP (ITOPT1) - KLM > Sent: Monday, July 04, 2016 5:16 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Minimum Volume Sizes in the Wild > > We create as much 3390-54's as possible. > We have some smaller volumes only because they were converted as is > from ESS's. > And we have some 3390-3 and 3390-1 for JES checkpoint and catalogs, > but with the current GDPS requirement to eliminate all Reserves, I > think it would not be a problem to combine them. On the other hand, > how much space will be wasted in your xx TB dasd park when you have a handful > of 3390-54's filled for 1%? > > Kees. > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of John Eells > Sent: 28 June, 2016 18:19 > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Minimum Volume Sizes in the Wild > > What is the *smallest* volume size everyone sees in general use? > > For example, will we create any problems if we assume that "everyone" > has or can define at least a 3390-9 size volume these days? What if > we chose 3390-27? > > -- > John Eells > IBM Poughkeepsie > ee...@us.ibm.com ---------------------------------------------------------------------- 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
