Re: How much memory?

2009-09-16 Thread Vince Getgood
Guys,
Thanks for all your help.
Unfortunately management (at MD level) have shot this idea down.

Sometimes, I wonder if there is any commitment at all for the mainframe 

platform


How much memory?

2009-09-14 Thread Vince Getgood
Hi all,
I'm not a VM expert, so forgive me if this seems a newbie quetion.

I have a z800 running z/VM, which has two production z/OS guests, and the
 
usual collection of CMS guests (TCPIP / OPERATOR etc).

We discovered recently that the z800 has an IFL (long story - don't ask!)
 
and would like to steal some of the 8GB currently allocated to VM, to run
 
up a VM / Linux LPAR for a POC.

The two z/OS guests are defined at 256MB  512MB (Bill Gates, are you
 
watching??), and don't page.

In your most esteemed opinion, what could I steal from the VM LPAR withou
t 
hurting it's and the guests performance / making it page?

Personally, I think 2GB would be enough.

Comments and opinions welcome.


Re: What speed are my channels actually running at?

2009-07-02 Thread Vince Getgood
Great,
That's what I hoped.

Thanks.


What speed are my channels actually running at?

2009-07-01 Thread Vince Getgood
Hi all,
I've just been making a Visio diagram of out I/O config on some old 
hardware (z800), which runs two z/OS guests under VM (5.4)

I dicovered that, although the VM IOCP has channels to my DASD system as 

FC (FICON) the z/OS IOCP has them defined as CNC (ESCON).

So what speed am I going to get on a z/OS I/O, ESCON or FICON? 

I'm assuming VM does something clever, like ignore what z/OS says?

TIA