8 Apr
2013
8 Apr
'13
8:39 a.m.
------ Original Message ------
From: "William Donzelli" <wdonzelli at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: 08/04/2013 03:38:42
Subject: Re: Re: Tech is the biggest problem facing archiving ? The
Register
Whilst its trivial to run VM within VM on zVM, is this still common? I
thought there was still a big hit in performance when you went more than
two deep because that's how deep the microded virtualization assists
(what used to be callde "SIE assists" on the original ESA boxes) went.
So if you are running in LPAR mode (and as I understand things many
modern boxes only run in LPAR mode) then you usually can only go two
deep in zVM.
However on VMWare you don't usually need more than one level. I have
only ever used VMWare under VMWare on a training course. Microsofts
virtualization "products" Virtual PC and Hyper-V both prohibit VMs under
VMs.
Is it? How
easy is it to run VM-in-VM with VMware? (That's a serious
question; I have never even looked at it myself. Work has never
required it, and, like all closed-source software, it's simply not
under consideration for my home use.
I d not know about VMware, but with z/VM, native on the IBM
mainframes, it is fairly common to run three or four nested virtual
machines while developing stuff.
--
Will
Dave
G4UGM