On Wednesday, 02/09/2011 at 03:10 EST, Jakub x <jszef...@gmail.com> wrote: > Hello, > Can I install z/VM (5.4 or 6.1) on dasd 9 model 27 ?
Yes. > I found in documentation "Only 3390 Model 3 or 9 is supported for installation > of z/VM. " but in another part of documentation I saw that "DASD 9 including > large Model 9s known as Model 27 and Model 54". It can be confusing. Technically, all of these large DASD are 3390 Model 9s. They simply have varying numbers of cylinders. Even if you define a Model 9 with 1113 cylinders, it reports itself as a Model 9, not a Model 1. It should probably say "3390 Model 9 with at least 10 017 cylinders." We use these other pseudo-model numbers as way to express the number of cylinders. A Model 57 has 57 x 1113 cylinders, the largest multiple of 1113 less than 64K. The allocation maps for spooling and paging volumes are built at installation time. The entire volume is formatted, but only the first 10 016 cylinders are allocated as SPOL or PAGE. That means the rest is PERM. I recommend that when you're done with installation, go back and reallocate those volumes so that they are entirely SPOL or PAGE. Alan Altmark z/VM and Linux on System z Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 alan_altm...@us.ibm.com IBM Endicott
