legolas wood wrote:
Hi
Thank you for reading my email.
I have some question about PR/SM and I would be very thankful for any
answer.
- System z PR/SM is implemented as hardware and it is capability of IBM
mainframe hardware.
Not really, as RS stated, PR/SM is microcode, special "software" that
allows control of the zSeries servers that is independent of the
operating systems that run on zSeries servers.
- z/OS or z/VM are interfaces (command line or GUI ) that let us use the
above capability to define LPARs. but each of them can utilize this
capability to some extent.
No, z/OS and z/VM are two of the operating systems that run on zSeries
mainframes and have nothing to do with defining LPARs.
- PR/SM can let z/OS to install and run Linux (Linux for System Z) on
its LPAR,
PR/SM allows you to create logical computers at the hardware level. You
can then install operating systems like z/OS, z/VM, z/VSE, or Linux that
will run on one of these logical computers.
Are the above assumptions correct?
Thanks
Depending on which zSeries Server you have the maximum number of LPARs
PR/SM can create is either 15 (z990 and older) or 60 (z9).
Now z/VM is a operating system that creates virtual machines under it
that allows you to run operating systems under it and z/VM can support
thousands of virtual machines. Which means you can run thousands of
virtual Linux images. In fact if you have the hardware (CPU and memory)
you can run tens of thousands of virtual Linux images. One company as a
test had over 40,000 linux images under one z/VM image.
z/VM is like VMWare's ESX, but z/VM is much more powerful, robust,
mature, and secure.
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